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