Mild-mannered mystery writer D. H. Mercer has become so immersed in his material that his creation, hard-boiled private eye Biff Deegan, constantly appears to him as a hallucination. Intent on getting rid of Biff, and replacing him with a more civilized detective, Mercer soon finds himself in a genuine mystery involving art fraud, murder, and a beautiful lady in peril.
Charlie and his troublesome cousin Paulie decide to steal $150000 in order to back a "sure thing" race horse that Paulie has inside information on. The aftermath of the robbery gets them into serious trouble with the local Mafia boss and the corrupt New York City police department.
An RCMP officer is ordered to discreetly take a Russian immigrant into custody in advance of a state visit by the Soviet premier. When the prisoner is kidnapped, the officer is drawn into a complicated assassination scheme.
Meek, owlish Felix and strident, catty Doris live in the same apartment building. His incessant typing bothers her; her gentlemen callers bother him. Felix informs the landlord of her activities, so Doris moves in on Felix. When they both get thrown out, they move in with Barney... until they drive him out! That's when Felix and Doris finally decide to put theory into practice. But do opposites attract?