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)
Thornton Edwards
Cuban Driver (uncredited)
Bob Evans
Black Man (uncredited)
Edward Fielding
Dr. Mandel (uncredited)
Martín Garralaga
Cuban Driver (uncredited)
Lawrence Grant
Dr. Holgarth (uncredited)
Chuck Hamilton
Sailor (uncredited)
Sam Harris
Concert Attendee (uncredited)
Arthur Stuart Hull
Shipboard Passenger (uncredited)
Crauford Kent
Dr. Jenkins - Ship's Doctor (uncredited)
Paul Lopez
Cuban Official (uncredited)
George McKay
Steward (uncredited)
Paul McVey
Minor Role (uncredited)
John Merton
Officer (uncredited)
Harold Miller
Shipboard Passenger (uncredited)
Forbes Murray
Minor Role (uncredited)
Pedro Regas
Cuban Driver (uncredited)
Addison Richards
Middle-Aged Man in Jerry's Stateroom (uncredited)
Cyril Ring
Shipboard Passenger (uncredited)
Ronald R. Rondell
Shipboard Passenger (uncredited)
Cosmo Sardo
Shipboard Passenger (uncredited)
Larry Steers
Departing Shipboard Passenger (uncredited)
Roland Varno
Steward (uncredited)
Juan Varro
Cuban Driver (uncredited)
Lloyd Whitlock
Customer (uncredited)
Isabel Withers
Middle-Aged Woman in Jerry's Stateroom (uncredited)
Frank Yaconelli
Hat Vender (uncredited)
Edward Biby
John Holland
John M. Stahl
Director
P.J. Wolfson
Screenplay
John M. Stahl
Producer
Irving Starr
Associate Producer
Leo Shuken
Original Music Composer
Franz Planer
Director of Photography
Gene Havlick
Editor
Lionel Banks
Art Direction
Rudolph Sternad
Art Direction
Fay Babcock
Set Decoration
Babs Johnstone
Set Decoration
Ridgeway Callow
Assistant Director