The house on the cliff

by Franklin W. Dixon

"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.