Trailer
 | Ronald Reagan as Lt. 'Brass' Bancroft |
 | Ila Rhodes as Pamela Schuyler |
 | Eddie Foy Jr. as Gabby Watters |
 | James Stephenson as Jim Cameron |
 | John Litel as Chief Agent Tom Saxby |
 | Frank M. Thomas as Doc |
 | Bernard Nedell as Earl 'Ace' Hemrich |
 | John Ridgely as Joe LeRoy |
 | Anthony Averill as Lead Henchman Hafer |
 | Rosella Towne as Zelma Warren |
| Joe Cunningham as Agent Dawson |
 | John Hamilton as Warden Jackson |
 | John Harron as Agent Cliff Durell |
 | Sidney Bracey as John 'Joe' Vicary |
 | Pierre Watkin as Chief of the Secret Service |
| Larry Williams as Dick Wayne |
 | Richard Bond as Buzzy - San Francisco Radio Operator |
 | Herbert Rawlinson as Adm. A.C. Schuyler |
 | Davison Clark as Deputy Warden |
 | Morgan Conway as Henchman Ed Powell |
 | Alberto Morin as Pedro the Bartender |
 | Raymond Bailey as Henchman Starting Fight [script name: Klune] |
| Henry Otho as The Turnkey |
 | Edgar Edwards as Convict Crowley |
| Al Lloyd as Convict Bartell |
| Pat O'Malley as Guard Cooper |
 | Eddy Chandler as Capt. King - Highway Patrol |
| Eumenio Blanco as Mexican Businessman in Bar |
| Nat Carr as Drunk at Bar |
| John Sinclair as First Tough in Bar Fight |
| Duke Green as Second Tough in Bar Fight |
 | Paul Panzer as Ivan - an Alien |
| Jack Wise as Ivan's Alien Pal |
 | Sol Gorss as Border Patrol Pilot |
| Jack A. Goodrich as Border Patrol Co-Pilot |
 | Lane Chandler as U.S. Border Patrol Officer |
 | Glen Cavender as Waiter |
| George Sorel as Capt. Cortez - Mexican Police |
| Don Turner as Agent Harper |
 | Carlyle Moore Jr. as Glendale Radio Operator |
| Dave Roberts as Highway Police Announcer (voice) |
| Frank Mayo as Treasury Agent Manning |
 | Jack Mower as Treasury Agent Aldrich |
 | Stuart Holmes as Agent Gowing |
| Hal Craig as Ground Superintendent |
 | Jeffrey Sayre as Road Gang Guard |
| Harry Hollingsworth as Guard |
| John J. Richardson as Alien - First Flight |
| Cliff Saum as Alien - First Flight |
| Camera | |
| Arthur Edeson | Director of Photography |
Production | |
| Jack L. Warner | Executive Producer |
Crew | |
| Sol Gorss | Stunts |
Camera | |
| Ted D. McCord | Director of Photography |
Production | |
| Hal B. Wallis | Executive Producer |
Sound | |
| Dolph Thomas | Sound |
Costume & Make-Up | |
| Howard Shoup | Costume Design |
Sound | |
| Leo F. Forbstein | Music Director |
| Bernhard Kaun | Original Music Composer |
| Bernhard Kaun | Orchestrator |
Production | |
| Bryan Foy | Associate Producer |
Writing | |
| Raymond L. Schrock | Writer |
Editing | |
| Doug Gould | Editor |
Crew | |
| Don Turner | Stunts |
| Duke Green | Stunts |
Directing | |
| Noel M. Smith | Director |
Art | |
| Ted Smith | Art Direction |
Crew | |
| John Sinclair | Stunts |
Directing | |
| Elmer Decker | Assistant Director |
Writing | |
| W. H. Moran | Other |
