Cosmo Topper (Roland Young) ends up having to take two young ladies to their home after a car accident. At their home we discover that Ann (Carole Landis) has returned home after years in the Orient and bought her friend Gail (Joan Blondell). That night a mysterious masked figure kills Gail, though we discover that it was by accident and Ann was the real target...
Gail's ghost goes and summons Topper for help. He finds Ann's house full of mysterious characters such as Dr Jeris (George Zucco) who is looking after Ann's father (HB Warner). The house is also full of trap doors that lead to secret chambers and pits full of water, which Topper's unfortunate chauffeur (Eddie Rochester Anderson) discovers a number of time. Can Topper and Gail's ghost discover the truth before the hooded figure strikes again at Ann, or the police (Donald MacBride) interfere...
This really is a romp where the kitchen sink is thrown at the screen, every dark house cliche you could think of is deployed along with plenty of humour and nonsense. Is it a comedy, crime mystery, even a horror? All three to be honest, somehow it all holds together as a highly entertaining film. Topper's wife (Billie Burke) is hilarious in her role and there is a rather superb twist...
