Richard Travis

Tom Norman / Rattick

Helen Westcott

Mary Lynn

Emory Parnell

Capt. Jan Roburt

Richard Fraser

Operative Farrell

James Griffith

Operative Dale

Ralf Harolde

Steele

Selmer Jackson

Capt. Wright

Gene Roth

Ehrlich

William Tannen

Dajek

Otto Reichow

Balser

Pierre Watkin

Mr. Sigmund

Paul Bryar

Cmdr. Braddock

William Haade

Anorus

Jason Robards Sr.

Dr. Loring

Jack Bernhard

Director

Arthur Hoerl

Screenplay