The clue of the silver key

The Clue of the Silver Key is a 1930 thriller novel by the British writer Edgar Wallace. Surefoot Smith of Scotland Yard is called in to investigate when petty thief Tom Tickler is killed and left in a taxi with £100 in his pocket. His discoveries eventually lead him towards the mysterious businessman Washington Wirth. (This summary is from Wikipedia.)

Summary written by Project Gutenberg, by machine.