# Secret Agent K-7 Returns

Heard 1939. 136 episodes.

SECRET AGENT K-7 RETURNS Before there was James Bond, before The Man Called X, and before Steve Mitchell took on a single Dangerous Assignment , there was Agent K-7. Secret Agent K-7 began on the radio in 1932 and made the leap into movies with Special Agent K-7. The original K-7 radio series is lost, but in 1939, a new transcribed syndicated series launched called, Secret Agent K-7 Returns. Secret Agent K-7 Returns was a series of seventy-eight fifteen minute spy stories. Secret Agent K-7 didn’t take part in most adventures. Rather, he introduced the stories of what other agents did. In early episodes, Secret Agent K-7 offered the stories as cautionary tales as what aggressor powers were doing to undermine piece. K-7’s role in the story was to explain how the preceding story had been a cautionary tale about what spies were doing to undermine world peace. He would also speak out against the dangers that spies posed to peace, and sought to discourage people from becoming involved in espionage with the same fervor as 1980s anti-drug campaigns. In later episodes, K-7 took a more active role, handing out assignments to the three agents who starred in the program and occasionally showing up to help with the capture of a bad guy. Perhaps, my biggest complaint with K-7 is that the voice acting was totally miscast. K-7 was supposed an international man of mystery and intrigue. Yet, the actor sounded more like a kindly high school principal. Beyond K-7, the series featured three…

## Sets

- Secret Agent K-7 Returns - Single Episodes (Old Time Radio Researchers): the Internet Archive states no licence or rights for it. Source: https://archive.org/details/OTRR_Secret_Agent_K7_Returns_Singles
- Secret Agent K-7 Returns (Old Time Radio): Marked Public domain (Creative Commons dedication) by its uploader at the Internet Archive; the record gives no basis for it. Source: https://archive.org/details/SecretAgentK-7Returns
- Secret Agent K-7 Returns (Page 2) (Old Time Radio): Marked Public domain (Creative Commons dedication) by its uploader at the Internet Archive; the record gives no basis for it. Source: https://archive.org/details/SecretAgentK-7Returnspage2
- Secret Agent K-7 Returns (Page 3) (Old Time Radio): Marked Public domain (Creative Commons dedication) by its uploader at the Internet Archive; the record gives no basis for it. Source: https://archive.org/details/SecretAgentK-7Returnspage3
- Secret Agent K-7 Returns (Page 4) (Old Time Radio): Marked Public domain (Creative Commons dedication) by its uploader at the Internet Archive; the record gives no basis for it. Source: https://archive.org/details/SecretAgentK-7Returnspage4
- Secret Agent K-7 Returns(page 7) (Old Time Radio): Marked Public domain (Creative Commons dedication) by its uploader at the Internet Archive; the record gives no basis for it. Source: https://archive.org/details/SecretAgentK-7Returnspage7
- Secret Agent K-7 returns (Page 5) (Old Time Radio): Marked Public domain (Creative Commons dedication) by its uploader at the Internet Archive; the record gives no basis for it. Source: https://archive.org/details/SecretAgentK-7Returnspage5
- Secret Agent K-7 Returns(Page 6) (Old Time Radio): Marked Public domain (Creative Commons dedication) by its uploader at the Internet Archive; the record gives no basis for it. Source: https://archive.org/details/SecretAgentK-7Returnspage6

## Episodes, in broadcast order

1. [Border Violations](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/1148634c6455), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2801%29%20Border%20Violations.mp3
1. [Oriental Spy (1)](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/97415f18d49e), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2856%29%20Oriental%20Spy%20%281%29.mp3
1. [Poisonous Gas](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/5fb82afc7c7b), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2802%29%20Poisonous%20Gas.mp3
1. [Oriental Spy (2)](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/52a20e4016e3), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2857%29%20Oriental%20Spy%20%282%29.mp3
1. [Information Peddler](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/9f0494e34278), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2803%29%20Information%20Peddler.mp3
1. [Narcotics Peddlers](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/4e234e3b8ef0), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2804%29%20Narcotics%20Peddlers.mp3
1. [Sabotage in Industry](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/84dca26f7826), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2805%29%20Sabotage%20in%20Industry.mp3
1. [Fortified Borders](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/f756087c0076), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2806%29%20Fortified%20Borders.mp3
1. [Blood and Steel Society](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/e302c95ac896), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2807%29%20Blood%20and%20Steel%20Society.mp3
1. [Illegal Use of Radio](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/ad93c0ec1c43), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2808%29%20Illegal%20Use%20of%20Radio.mp3
1. [Coast Defense Secrets](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/0a6422647f3a), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2809%29%20Coast%20Defense%20Secrets.mp3
1. [Suicide Ships](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/50cd943c513f), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2810%29%20Suicide%20Ships.mp3
1. [War Supplies](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/da8f223234f4), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2811%29%20War%20Supplies.mp3
1. [Revolution](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/204de9b8312e), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2812%29%20Revolution.mp3
1. [Military Secrets Leaked](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/3649bf791332), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2813%29%20Military%20Secrets%20Leaked.mp3
1. [Undesirable Aliens](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/aa39bf3ea488), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2814%29%20Undesirable%20Aliens.mp3
1. [High Speed Bomber](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/80adc1c78fcc), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2815%29%20High%20Speed%20Bomber.mp3
1. [Master Spy](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/01b1f8be62fb), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2816%29%20Master%20Spy.mp3
1. [Gold Shipments](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/8a1b8c692923), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2817%29%20Gold%20Shipments.mp3
1. [Storm Cloud](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/9e074de40917), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2818%29%20Storm%20Cloud.mp3
1. [Apparent Civil War](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/f526155f51f7), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2819%29%20Apparent%20Civil%20War.mp3
1. [Air Defenses](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/ff7a2fec46a1), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2820%29%20Air%20Defenses.mp3
1. [Thermite Bombs](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/02cdc8700cdf), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2821%29%20Thermite%20Bombs.mp3
1. [Fleet Movements](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/65bf0da9c573), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2822%29%20Fleet%20Movements.mp3
1. [Foodstuffs](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/1ef2bfdfde27), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2823%29%20Foodstuffs.mp3
1. [Secret Police](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/95e403c805b4), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2824%29%20Secret%20Police.mp3
1. [Aeroplane Order](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/6ff3cc3e1f10), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2825%29%20Aeroplane%20Order.mp3
1. [Innocent Citizens Used](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/ab2190f8d319), aired 1939 (14 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2826%29%20Innocent%20Citizens%20Used.mp3
1. [Bombing Planes](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/cb51f9710a1f), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2827%29%20Bombing%20Planes.mp3
1. [Embassy Master Spy](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/f9be35f45e5c), aired 1939 (14 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2828%29%20Embassy%20Master%20Spy.mp3
1. [Shipyards](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/308dbe48040f), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2829%29%20Shipyards.mp3
1. [Colonial Uprising](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/0a6ec64c79d7), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2830%29%20Colonial%20Uprising.mp3
1. [World Crisis](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/74e9c6e80d68), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2831%29%20World%20Crisis.mp3
1. [Government Overthrow](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/2b225c800135), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2832%29%20Government%20Overthrow.mp3
1. [Refugees](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/66512f712116), aired 1939 (14 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2833%29%20Refugees.mp3
1. [Fraudulent Passports](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/e2c01619fef6), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2834%29%20Fraudulent%20Passports.mp3
1. [Information for the Premier](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/380d6674487f), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2835%29%20Information%20for%20the%20Premier.mp3
1. [Secrets Leaked](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/d544807723a6), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2836%29%20Secrets%20Leaked.mp3
1. [Code Book Stolen](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/b15dcc911215), aired 1939 (14 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2837%29%20Code%20Book%20Stolen.mp3
1. [Carl Frankenburg aka Known Spy](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/fb5427a1271f), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2838%29%20Carl%20Frankenburg%20aka%20Known%20Spy.mp3
1. [Machine Gun Plans aka Inventor Missing](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/dd12af577170), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2839%29%20Machine%20Gun%20Plans%20aka%20Inventor%20Missing.mp3
1. [Wholesale Murder](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/e78376ab068f), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2840%29%20Wholesale%20Murder.mp3
1. [Anti-Aircraft Gun](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/e6e6a1b698f7), aired 1939 (14 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2841%29%20Anti-Aircraft%20Gun.mp3
1. [Agent Z Disappears](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/24e2bee42d15), aired 1939 (14 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2842%29%20Agent%20Z%20Disappears.mp3
1. [Counterfeiters](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/fbfa56ac991e), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2843%29%20Counterfeiters.mp3
1. [Vapor Gas](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/f6fa872609c8), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2844%29%20Vapor%20Gas.mp3
1. [Aeroplane Factory](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/b3de022048eb), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2845%29%20Aeroplane%20Factory.mp3
1. [Defense Plans](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/4c678f71531d), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2846%29%20Defense%20Plans.mp3
1. [Ultimatum](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/a7d47b1cc621), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2847%29%20Ultimatum.mp3
1. [City of Intrigue](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/443bc3ffca29), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2848%29%20City%20of%20Intrigue.mp3
1. [Firing Squad](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/f4fff82729f1), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2849%29%20Firing%20Squad.mp3
1. [Narcotics Smuggled](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/7140ab93b8f9), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2850%29%20Narcotics%20Smuggled.mp3
1. [Aeroplane Plans](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/9e50c2d82908), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2851%29%20Aeroplane%20Plans.mp3
1. [Delivery of Papers](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/1b13f0387b9d), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2852%29%20Delivery%20of%20Papers.mp3
1. [Government Overthrow](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/65c6203bcbea), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2853%29%20Government%20Overthrow.mp3
1. [Agent Missing](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/601dfcffac94), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2854%29%20%20Agent%20Missing.mp3
1. [Military Information Stolen](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/57476af3ac53), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2855%29%20Military%20Information%20Stolen.mp3
1. [Favor Returned](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/9c2903e2e12d), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2858%29%20Favor%20Returned.mp3
1. [Foreign Agent](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/1945b91137ce), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2861%29%20Foreign%20Agent.mp3
1. [Letter Box Agent](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/f84e3631523d), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2862%29%20Letter%20Box%20Agent.mp3
1. [Military and Diplomatic Secrets](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/817d9444a0a7), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2863%29%20Military%20and%20Diplomatic%20Secrets.mp3
1. [Blonde Spy](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/c6c2b14e8db5), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2864%29%20Blonde%20Spy.mp3
1. [Defense Programs](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/5114a3f8d6a1), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2865%29%20Defense%20Programs.mp3
1. [Spy Returns](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/70a64272311f), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2866%29%20Spy%20Returns.mp3
1. [Stolen Maps](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/28b491607ae1), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2867%29%20Stolen%20Maps.mp3
1. [Far East Mission](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/9c265da58682), aired 1939 (15 min): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/Secret%20Agent%20K7%2039-xx-xx%20%2868%29%20Far%20East%20Mission.mp3
1. [Jay Jostyn](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/0fab0699527b) (4:21): https://archive.org/download/OTRR_Secret_Agent_K7_Returns_Singles/01%20Jay%20Jostyn%20Bio.mp3
1. [SAK7 1939 (01) Border Violations](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/16dc58752252) (15 min): https://archive.org/download/SecretAgentK-7Returns/Sak7193901BorderViolations.mp3
1. [SAK7 1939 (02) Poisonous Gas](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/d2e212b242ef) (15 min): https://archive.org/download/SecretAgentK-7Returns/Sak7193902PoisonousGas.mp3
1. [SAK7 1939 (03) Information Peddler](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/efa24c16cf57) (15 min): https://archive.org/download/SecretAgentK-7Returns/Sak7193903InformationPeddler.mp3
1. [SAK7 1939 (04) Narcotics Peddlars](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/6e76d33e8342) (15 min): https://archive.org/download/SecretAgentK-7Returns/Sak7193904NarcoticsPeddlars.mp3
1. [SAK7 1939 (05) Sabotage in Industry](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/f7ec8e91ce8c) (15 min): https://archive.org/download/SecretAgentK-7Returns/Sak7193905SabotageInIndustry.mp3
1. [SAK7 1939 (06) Fortified Borders](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/e224d2e2cb05) (15 min): https://archive.org/download/SecretAgentK-7Returns/Sak7193906FortifiedBorders.mp3
1. [SAK7 1939 (07) Blood and Steal Society](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/aa06ee1ca3f5) (15 min): https://archive.org/download/SecretAgentK-7Returns/Sak7193907BloodAndStealSociety.mp3
1. [SAK7 1939 (08) Illegal Use of Radio](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/ed23675f4859) (15 min): https://archive.org/download/SecretAgentK-7Returns/Sak7193908IllegalUseOfRadio.mp3
1. [SAK7 1939 (09) Coast Defense Secrets](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/6fa7063d3951) (15 min): https://archive.org/download/SecretAgentK-7Returns/Sak7193909CoastDefenseSecrets.mp3
1. [SAK7 1939 (10) Suicide Ships](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/4fdd7204b383) (15 min): https://archive.org/download/SecretAgentK-7Returns/Sak7193910SuicideShips.mp3
1. [SAK7 1939 (11) War Supplies](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/58c69d664055) (15 min): https://archive.org/download/SecretAgentK-7Returnspage2/Sak7193911WarSupplies.mp3
1. [SAK7 1939 (12) Revolution](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/810b522a4d84) (15 min): https://archive.org/download/SecretAgentK-7Returnspage2/Sak7193912Revolution.mp3
1. [SAK7 1939 (13) Military Secrets Leaked](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/c910240d0f32) (15 min): https://archive.org/download/SecretAgentK-7Returnspage2/Sak7193913MilitarySecretsLeaked.mp3
1. [SAK7 1939 (14) Undesirable Aliens](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/32a9477fbea0) (15 min): https://archive.org/download/SecretAgentK-7Returnspage2/Sak7193914UndesirableAliens.mp3
1. [SAK7 1939 (15) High Speed Bomber](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/1ea399085c59) (15 min): https://archive.org/download/SecretAgentK-7Returnspage2/Sak7193915HighSpeedBomber.mp3
1. [SAK7 1939 (16) Master Spy](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/479372bc17d9) (15 min): https://archive.org/download/SecretAgentK-7Returnspage2/Sak7193916MasterSpy.mp3
1. [SAK7 1939 (17) Gold Shipments](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/50551cd40cd8) (15 min): https://archive.org/download/SecretAgentK-7Returnspage2/Sak7193917GoldShipments.mp3
1. [SAK7 1939 (18) Storm Cloud](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/317292a6490b) (15 min): https://archive.org/download/SecretAgentK-7Returnspage2/Sak7193918StormCloud.mp3
1. [SAK7 1939 (19) Apparent Civil War](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/848bd0d0ea9c) (15 min): https://archive.org/download/SecretAgentK-7Returnspage2/Sak7193919ApparentCivilWar.mp3
1. [SAK7 1939 (20) Air Defenses](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/7e5c840a75cd) (15 min): https://archive.org/download/SecretAgentK-7Returnspage2/Sak7193920AirDefenses.mp3
1. [SAK7 1939 (21) Thermite Bombs](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/062ae3d060b3) (15 min): https://archive.org/download/SecretAgentK-7Returnspage3/Sak7193921ThermiteBombs.mp3
1. [SAK7 1939 (22) Fleet Movements](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/7baa2054cfc5) (15 min): https://archive.org/download/SecretAgentK-7Returnspage3/Sak7193922FleetMovements.mp3
1. [SAK7 1939 (23) Foodstuffs](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/e8fb2386b415) (15 min): https://archive.org/download/SecretAgentK-7Returnspage3/Sak7193923Foodstuffs.mp3
1. [SAK7 1939 (24) Secret Police](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/f8f7ae2220a1) (15 min): https://archive.org/download/SecretAgentK-7Returnspage3/Sak7193924SecretPolice.mp3
1. [SAK7 1939 (25) Aeroplane Order](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/e1b1e23f8b75) (15 min): https://archive.org/download/SecretAgentK-7Returnspage3/Sak7193925AeroplaneOrder.mp3
1. [SAK7 1939 (26) Innocent Citizens Used](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/ce271051a0cc) (14 min): https://archive.org/download/SecretAgentK-7Returnspage3/Sak7193926InnocentCitizensUsed.mp3
1. [SAK7 1939 (27) Bombing Planes](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/5d8fceb24b1e) (15 min): https://archive.org/download/SecretAgentK-7Returnspage3/Sak7193927BombingPlanes.mp3
1. [SAK7 1939 (28) Embassy Master Spy](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/300e03af08aa) (14 min): https://archive.org/download/SecretAgentK-7Returnspage3/Sak7193928EmbassyMasterSpy.mp3
1. [SAK7 1939 (29) Shipyards](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/9abf2010047c) (15 min): https://archive.org/download/SecretAgentK-7Returnspage3/Sak7193929Shipyards.mp3
1. [SAK7 1939 (30) Colonial Uprising](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/9ec50f82d381) (15 min): https://archive.org/download/SecretAgentK-7Returnspage3/Sak7193930ColonialUprising.mp3
1. [SAK7 1939 (31) World Crisis](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/86dccb2f249f) (15 min): https://archive.org/download/SecretAgentK-7Returnspage4/Sak7193931WorldCrisis.mp3
1. [SAK7 1939 (32) Government Overthrow](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/32947f9ae601) (15 min): https://archive.org/download/SecretAgentK-7Returnspage4/Sak7193932GovernmentOverthrow.mp3
1. [SAK7 1939 (33) Refugees](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/f72fdb761c3f) (14 min): https://archive.org/download/SecretAgentK-7Returnspage4/Sak7193933Refugees.mp3
1. [SAK7 1939 (34) Fraudulent Passports](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/2f7f32282a73) (15 min): https://archive.org/download/SecretAgentK-7Returnspage4/Sak7193934FraudulentPassports.mp3
1. [SAK7 1939 (35) Information for the Premier](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/d89e20a2366d) (15 min): https://archive.org/download/SecretAgentK-7Returnspage4/Sak7193935InformationForThePremier.mp3
1. [SAK7 1939 (36) Secrets Leaked](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/ad85e225e31f) (15 min): https://archive.org/download/SecretAgentK-7Returnspage4/Sak7193936SecretsLeaked.mp3
1. [SAK7 1939 (37) Code Book Stolen](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/eba4ac02ff98) (14 min): https://archive.org/download/SecretAgentK-7Returnspage4/Sak7193937CodeBookStolen.mp3
1. [SAK7 1939 (38) Carl Frakenburg](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/df5749b23194) (14 min): https://archive.org/download/SecretAgentK-7Returnspage4/Sak7193938CarlFrakenburg.mp3
1. [SAK7 1939 (39) Machine Gun Plans](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/81d5ec872019) (15 min): https://archive.org/download/SecretAgentK-7Returnspage4/Sak7193939MachineGunPlans.mp3
1. [SAK7 1939 (40) Wholesale Murder](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/13fe689ab7bf) (15 min): https://archive.org/download/SecretAgentK-7Returnspage4/Sak7193940WholesaleMurder.mp3
1. [SAK7 1939 (61) Foreign Agent](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/e89713d5d35e) (15 min): https://archive.org/download/SecretAgentK-7Returnspage7/Sak7193961ForeignAgent.mp3
1. [SAK7 1939 (62) Letter Box Agent](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/38bc6c523320) (15 min): https://archive.org/download/SecretAgentK-7Returnspage7/Sak7193962LetterBoxAgent.mp3
1. [SAK7 1939 (63) Military and Diplomatic Secrets](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/c46656745f31) (15 min): https://archive.org/download/SecretAgentK-7Returnspage7/Sak7193963MilitaryAndDiplomaticSecrets.mp3
1. [SAK7 1939 (64) Blonde Spy](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/7690add00eee) (15 min): https://archive.org/download/SecretAgentK-7Returnspage7/Sak7193964BlondeSpy.mp3
1. [SAK7 1939 (65) Defense Programs](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/b2e1db594420) (15 min): https://archive.org/download/SecretAgentK-7Returnspage7/Sak7193965DefensePrograms.mp3
1. [SAK7 1939 (66) Spy Returns](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/82155a1e63c6) (15 min): https://archive.org/download/SecretAgentK-7Returnspage7/Sak7193966SpyReturns.mp3
1. [SAK7 1939 (67) Stolen Maps](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/0e6d0317c8bb) (15 min): https://archive.org/download/SecretAgentK-7Returnspage7/Sak7193967StolenMaps.mp3
1. [SAK7 1939 (68) Far East Mission](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/631d2d469f42) (15 min): https://archive.org/download/SecretAgentK-7Returnspage7/Sak7193968FarEastMission.mp3
1. [SAK7 1939 (69)Trial Of Lt. Yardlin](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/20a029eadc7b) (12 min): https://archive.org/download/SecretAgentK-7Returnspage7/Sak7193969trialOfLt.Yardlin.mp3
1. [SAK7 1939 (41) Anti-Aircraft Gun](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/8a77e6fc4de7) (14 min): https://archive.org/download/SecretAgentK-7Returnspage5/Sak7193941Anti-aircraftGun.mp3
1. [SAK7 1939 (42) Agent 'Z' Disappears](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/b10db3c5d081) (14 min): https://archive.org/download/SecretAgentK-7Returnspage5/Sak7193942AgentzDisappears.mp3
1. [SAK7 1939 (43) Counterfeiters](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/63271a2c54cb) (15 min): https://archive.org/download/SecretAgentK-7Returnspage5/Sak7193943Counterfeiters.mp3
1. [SAK7 1939 (44) Vapor Gas](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/bcf2060023e9) (15 min): https://archive.org/download/SecretAgentK-7Returnspage5/Sak7193944VaporGas.mp3
1. [SAK7 1939 (45) Aeroplane Factory](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/cd09dd3437b2) (15 min): https://archive.org/download/SecretAgentK-7Returnspage5/Sak7193945AeroplaneFactory.mp3
1. [SAK7 1939 (46) Defense Plans](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/8dde588db880) (15 min): https://archive.org/download/SecretAgentK-7Returnspage5/Sak7193946DefensePlans.mp3
1. [SAK7 1939 (47) Ultimatum](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/77c3501f5ea3) (15 min): https://archive.org/download/SecretAgentK-7Returnspage5/Sak7193947Ultimatum.mp3
1. [SAK7 1939 (48) City of Intrigue](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/5c75a321940c) (15 min): https://archive.org/download/SecretAgentK-7Returnspage5/Sak7193948CityOfIntrigue.mp3
1. [SAK7 1939 (49) Firing Squad](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/e63931a9bd0c) (15 min): https://archive.org/download/SecretAgentK-7Returnspage5/Sak7193949FiringSquad.mp3
1. [SAK7 1939 (50) Narcotics Smuggled](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/741b3892a9e0) (15 min): https://archive.org/download/SecretAgentK-7Returnspage5/Sak7193950NarcoticsSmuggled.mp3
1. [Sak7193951AeroplanePlans](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/b9af5513371b) (15 min): https://archive.org/download/SecretAgentK-7Returnspage6/Sak7193951AeroplanePlans.mp3
1. [Sak7193952DeliveryOfPapers](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/e243b51f70c8) (15 min): https://archive.org/download/SecretAgentK-7Returnspage6/Sak7193952DeliveryOfPapers.mp3
1. [Sak7193953GovernmentOverthrow](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/bbf40d7d1e20) (15 min): https://archive.org/download/SecretAgentK-7Returnspage6/Sak7193953GovernmentOverthrow.mp3
1. [Sak7193954AgentMissing](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/62653a13eb0c) (15 min): https://archive.org/download/SecretAgentK-7Returnspage6/Sak7193954AgentMissing.mp3
1. [Sak7193955MilitaryInformationStolen](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/aa7f42ceeb36) (15 min): https://archive.org/download/SecretAgentK-7Returnspage6/Sak7193955MilitaryInformationStolen.mp3
1. [Sak7193956OrientalSpy1](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/0c09db248ca7) (15 min): https://archive.org/download/SecretAgentK-7Returnspage6/Sak7193956OrientalSpy1.mp3
1. [Sak7193957OrientalSpy2](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/4101ad28fe0d) (15 min): https://archive.org/download/SecretAgentK-7Returnspage6/Sak7193957OrientalSpy2.mp3
1. [Sak7193958FavorReturned](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/9d0a811d5471) (15 min): https://archive.org/download/SecretAgentK-7Returnspage6/Sak7193958FavorReturned.mp3
1. [Sak7193959InventorMissing](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/bd3290e0bc66) (15 min): https://archive.org/download/SecretAgentK-7Returnspage6/Sak7193959InventorMissing.mp3
1. [Sak7193960KnownSpyrepeatOf38](https://invisiblenetwork.ai/radio-drama/series/secret-agent-k-7-returns/3fb0dce311b0) (15 min): https://archive.org/download/SecretAgentK-7Returnspage6/Sak7193960KnownSpyrepeatOf38.mp3

A set by the Old Time Radio Researchers Group (otrr.org), at the Internet Archive's Old Time Radio collection.

Nothing here is called public domain on this site's say-so. In the United States, sound recordings first fixed before 15 February 1972 have federal protection under the Music Modernization Act of 2018, for most until 2067 at the latest, so most American radio of the 1930s to the 1950s is not in the public domain there. Each set shows the licence, mark or statement its archive gives, and says whose it is.