cast
- James Stewart
- Prof. Robert Leaf
- Fabian
- Kenneth
- Glynis Johns
- Vina Leaf
- Cindy Carol
- Pandora Leaf
- Bill Mumy
- Erasmus Leaf
- Brigitte Bardot
- Herself
- John Williams
- Peregine Upjohn
- Jack Kruschen
- Dr. Volker
- Charles Knox Robinson III
- George
- Howard Freeman
- Dean Sawyer
- Jane Wald
- Terry
- Alice Pearce
- Unemployment Office Clerk
- Jesse White
- Argyle
- Ed Wynn
- The Captain
- John Stevens
- Student
- Susanne Cramer
- Blonde Doll
- Ted Mapes
- Postman
- Harry Fleer
- T-Man
- Jack Daly
- Ticket Seller
- Robert Fitzpatrick
- Student
- Maida Severn
- Schoolteacher
- Dick Lane
- Sports Announcer
- Orville Sherman
- Von Schlogg
- Gene O'Donnell
- Lieutenant Rink
- William Henry
- Cashier
- James Brolin
- Student
- Gloria Clark
- Prof. Bums
- Marcel dela Brosse
- Taxi Driver
- Pitt Herbert
- Bank Manager
- Clive Clerk
- Student
crew
- Henry Koster
- Director, Producer
- Fred Kohlmar
- Producer
- Hal Kanter
- Screenwriter
- John Haase
- Book Author
- Lucien Ballard
- Cinematographer
- George Duning
- Composer (Music Score)
- Marjorie Fowler
- Editor
- Jack Martin Smith
- Art Director
- Malcolm Brown
- Art Director
- Steven Potter
- Set Designer
- Walter Scott
- Set Designer
- Moss Mabry
- Costume Designer
- Alfred Bruzlin
- Sound/Sound Designer
- Elmer Raguse
- Sound/Sound Designer
- Emil Kosa, Jr.
- Special Effects
- L.B. Abbott
- Special Effects
- Fred R. Simpson
- First Assistant Director
- Ben Nye, Sr.
- Makeup
