The house on the cliff

"The House on the Cliff" by Franklin W. Dixon is a mystery novel written in 1927. When famous detective Fenton Hardy enlists his sons Frank and Joe to investigate drug smuggling, the boys are drawn to a mysterious house overlooking Barmet Bay. After being trapped and witnessing a boat explosion, they rescue a suspicious stranger. When both their father and the rescued man vanish, the Hardy Boys must navigate secret tunnels, criminal smugglers, and dangerous traps to solve the case.

Summary written by Project Gutenberg, by machine.