Jeff Richards

Mark Bradley

John Smith

Joe Walker

Venetia Stevenson

Venus

Alan Napier

Dr. Paul Lujan

Diane Jergens

Urana

June Blair

Mercuria

Gavin Muir

Dr. McBain

George Brand

M. Hugh Garland

Vern Taylor

Co-Pilot (uncredited)

Tom Riley

Co-Pilot (uncredited)

Bob Stratton

Pilot (uncredited)

Ray Buffum

Writer

Raoul Kraushaar

Original Music Composer

John F. Seitz

Director of Photography

Albert J. Cohen

Producer

Frank Tuttle

Director

Prescott Chaplin

Story

George C. Bertholon

Associate Producer

Roland Gross

Editor

Jack T. Collis

Art Direction

Frank M. Miller

Set Decoration

Howard Shoup

Costume Design

Gordon Bau

Makeup Supervisor