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Melvyn Douglas
Jerome 'Jerry' Marvin

Ruth Hussey
Professor Susan Drake

Ellen Drew
Babe Marvin

Charles Coburn
Professor Drake

John Hubbard
Tom Drake

Harvey Stephens
Dr. Cassell

Theresa Harris
Hattie

Hooper Atchley
Ticket Man (uncredited)

Irving Bacon
Doorman (uncredited)

Brooks Benedict
Concert Attendee (uncredited)

George Beranger
Waiter (uncredited)

Betty Blythe
Minor Role (uncredited)

Lloyd Bridges
Taxi Driver (uncredited)

Barbara Brown
Shipboard Passenger (uncredited)

Hobart Cavanaugh
Shipboard Passenger (uncredited)

Grace Darmond
Minor Role (uncredited)