A man ignores a warning to stay away from a sinister house on marshland near Liverpool; when someone drowns close by, he finds the evidence doesn’t add up…

A rich but miserly old man taunts his relatives about who will get his money when he dies, and is soon mysteriously murdered. It turns out that he has left his estate to a beautiful young actress whom the other relatives didn't know was related to him. Several attempts on her life are thwarted by a detective, who sets out to discover who's behind the scheme to kill her.