Glenn Ford
Elliott Nash

Debbie Reynolds
Nell Nash

John McGiver
Sam Thorpe

Doro Merande
Matilda

Mabel Albertson
Mrs. Chandler

Carl Reiner
Harlow Edison

Bert Freed
Lt. Jenkins

Martin Landau
The Duke

Helen Kleeb
Miss Spence, Nash's Secretary

Jon Lormer
Dr. Weiner

Dick Wessel
Louis the Louse (as Richard Wessel)

Robert Ellenstein
Ben

Stanley Adams
Dan Shelby (voice) (uncredited)

Gene Coogan
Man (uncredited)

Franklyn Farnum
Television Technician in Booth (uncredited)

Jack Kruschen
Taxi Driver (uncredited)

Rex Lease
Stage Manager (uncredited)

Frank Mitchell
Mr. Olson (uncredited)

William Smith
Actor Who Trips Over Camera (uncredited)

Guy Stockwell
Actor (voice) (uncredited)

Harlan Warde
Dr. Bradley (uncredited)