Jameson Thomas is excellent as the villainous Vernon Wolfe. Wolfe plots a clever murder to get his hands on the murdered man's vast estate, including a stupendous yacht. Fast forward to the future and Wolfe is a financial adviser. He handles the assets of a wealthy young man, who has become suspicious of Wolfe's business practises. In fact the man is sure Wolfe is stealing from his account.
Wolfe invites the young man to his yacht for a weekend of fun, but the man is cautious and has a friend (Jack Raine) accompany him, masquerading as his valet. Soon it is revealed that Wolfe intends to murder the young man to gain full control of his estate. But Raine is on hand to thwart any attacks. Also Wolfe has his own problems as he has made many enemies in his life and one of them has boarded the yacht with the intention of murdering him.