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.
| Actor | Role |
|---|---|
 Marie WilsonIrma Peterson | Irma Peterson |
 Diana LynnJane Stacy | Jane Stacy |
 Dean MartinSteve Laird | Steve Laird |
 Jerry LewisSeymour | Seymour |
 John LundAl | Al |
 Corinne CalvetYvonne Yvonne | Yvonne Yvonne |
 Lloyd CorriganSharpie Corrigan | Sharpie Corrigan |
 Don PorterMr. Brent | Mr. Brent |
 Harold HuberPete | Pete |
 Joseph VitaleSlim | Slim |
 Charles EvansC.Y. Sanford | C.Y. Sanford |
 Kenneth TobeyPilot | Pilot |
 Al FergusonNews Vendor (uncredited) | News Vendor (uncredited) |
| HHerschel GrahamCasino Patron (uncredited) | Casino Patron (uncredited) |
 Lee MillerChief Hiawatha's Chauffeur (uncredited) | Chief Hiawatha's Chauffeur (uncredited) |
 Charles SherlockMan Being Deputized (uncredited) | Man Being Deputized (uncredited) |