Tristram Coffin

Tris Coffin

Jeff King

Mae Clarke

Glenda Thomas

Don Haggerty

Tony Dirken

James Craven

Prof. Millard

I. Stanford Jolley

Prof. Bryant

House Peters Jr.

Burt Winslow

Douglas Evans

Chairman

Ted Adams

Martin Conway

Stanley Price

Gunther Von Strum

Dale Van Sickel

Martin/Professor Drake/Gates

Tom Steele

Knox/Taxi Driver

David Sharpe

Blears/Cliff/Stark

Eddie Parker

Rowan

Buddy Roosevelt

Philips

Marshall Bradford

Professor Graftner

Arvon Dale

Chairman’s Aide

Art Gilmore

Newscaster

Bert LeBaron

Morgan

Carey Loftin

Sparks

Jack O'Shea

Walter

Bud Wolfe

Clay

Frank O'Connor

Warehouse Guard

Fred C. Brannon

Director

Royal K. Cole

Guión

Sol Shor

Guión

William Lively

Guión

Ellis W. Carter

Director de Fotografía

Stanley Wilson

Compositor de la Música Original

Joseph Dubin

Compositor de la Música Original

Republic Pictures

Compañía de Produccion

Cliff Bell Sr.

Editor

Sam Starr

Editor