"Singer Steve, friend Seymour and fiance Jane, along with her dizzy blonde room mate Irma, have a series of misadventures on a California-bound train and end up involved with a gang of murderous gangsters in Las Vegas."
Marie Wilson
as Irma Peterson
Diana Lynn
as Jane Stacy
Dean Martin
as Steve Laird
Jerry Lewis
as Seymour
John Lund
as Al
Corinne Calvet
as Yvonne Yvonne
Lloyd Corrigan
as Sharpie Corrigan
Don Porter
as Mr. Brent
Harold Huber
as Pete
Joseph Vitale
as Slim
Charles Evans
as C.Y. Sanford
Kenneth Tobey
as Pilot
Al Ferguson
as News Vendor (uncredited)
Herschel Graham
as Casino Patron (uncredited)
Lee Miller
as Chief Hiawatha's Chauffeur (uncredited)
Charles Sherlock
as Man Being Deputized (uncredited)
Hal Walker
Director
Cy Howard
Associate Producer
Screenplay
Leigh Harline
Original Music Composer
Sam Comer
Set Decoration
Parke Levy
Henry Bumstead
Art Direction
Lee Garmes
Director of Photography
Hal B. Wallis
Producer
Emile Kuri
Hans Dreier
Edith Head
Costume Design
Charles Sickler
Grip
Murray Young
Key Grip
Gordon Jennings
Special Effects
Walter Oberst
Sound Recordist
Gene Merritt
Francisco Day
Assistant Director
Warren Low
Editor
Wally Westmore
Makeup Supervisor