The story follows the adventures of two young men, John and David, who are sent to a remote island off the coast of Scotland to investigate the mysterious disappearance of a wealthy man. Upon their arrival, they discover a strange house on the island, inhabited by a mysterious woman who claims to be the man’s widow. As they explore the island, they uncover a web of secrets and lies, and soon find themselves in a race against time to uncover the truth before it’s too late. Along the way, they must contend with a host of strange characters, including a sinister doctor, a mad scientist, and a mysterious cult. Will John and David be able to unravel the mystery and save the day? Or will they be doomed to suffer the same fate as the man they were sent to find?
By Arthur Gask · First published 1931 · Genre: Mystery, Thriller, Adventure · 17 chapters