A group of people in an old dark house are terrorized by a mysterious hooded figure dressed in black who proceeds to kill them off one by one.
Discharged by his employer, a private eye stays on a jewel theft case after a model with information for him is murdered.
A industrialist has a row with his son, who leaves home. Meanwhile, both his assistant and solicitor conspire to embezzle a fortune in bonds. A plucky young newspaper reporter pursues the rich man's daughter.
