Full Credits
15 members

Richard Bailey
Lance Reardon

Linda Stirling
Claire Forrest

Roy Barcroft
Capt. Mephisto

Kenne Duncan
Sidney Brand

Forrest Taylor
Prof. William Forrest

Forbes Murray
Prof. Harry Hargraves

Jack Ingram
Edward Armstrong

Harry Strang
Frederick "Fred" Braley

Ed Cassidy
Paul Melton
Frank Alten
John Raymond

Lane Chandler
Police Insp. Reed

Russ Vincent
Ruga

Dale Van Sickel
Barker / Ritter / Lewis / Frazier / Sardon
Tom Steele
Lyons / Bailey
Duke Green
Spencer Harvey
29 members
Yakima Canutt
Director
Spencer Gordon Bennet
Director
Wallace Grissell
Director
Alan James
Screenplay
Basil Dickey
Screenplay
Grant Nelson
Screenplay
Joseph F. Poland
Screenplay
Jesse Duffy
Screenplay
Albert DeMond
Screenplay
Ronald Davidson
Producer
R.G. Springsteen
Unit Manager
Ronald Davidson
Associate Producer
Bud Thackery
Director of Photography
Mort Glickman
Original Music Composer
Ed Borschell
Sound
Richard Cherwin
Music Director
Fred A. Ritter
Art Direction
Charles S. Thompson
Set Decoration
Harold Minter
Editor
Cliff Bell Sr.
Editor
Duke Green
Stunts
Fred Graham
Stunts
Howard Lydecker
Special Effects
Tom Steele
Stunts
Theodore Lydecker
Special Effects
Duke Taylor
Stunts
Eddie Parker
Stunts
Dale Van Sickel
Stunts
Babe DeFreest
Stunts