John Stone
Bill Rogers
Helene Stone
Elizabeth Wilkinson
Dr. Hank Tyson (as Thomas Wood)
William Kerwin
Detective Crane
Lawrence Tobin
Lord Gold
Ted Schell
Dr. Howard Helsing
Otto Schelssinger
Hester Avery
Eleanor Vaill
The Limey Seaman / Baron Khron (voice) (as Seymour Sheldon)
Herschell Gordon Lewis
Sherri Morris
Dolores Carlos
Assistant Director
Allison Louise Downe
Writer
Production Manager
Director
Producer
Music
Larry Wellington
Donald Stanford
Editor
Richard Brinkmann