Lloyd Trent
Dr. Carrington
Harry Brunner (1 episode)
Storekeeper
Dr. Flankon (uncredited)
Howard Buss (11 episodes)
Earl Cott
Dr. Alistair Craig
Minister
Huddleston
Professor Blount
Dr. Evans (1 episode)
Dr. Tighe
Mr. Reed
Dr. Hartfield
Dr. Hartfield (1 episode)
Dr. Ashburn
Pastor Dixon
Frank Cavanaugh
Hearing Officer
Dr. Bradville
Mr. Hayes
Reverend Keith (2 episodes)
First Scientist
Machine (voice) (1 episode)
Studio Photo Archivist (uncredited)
George - Hotel Clerk
Allan A. Dale (2 episodes)
Springer
Pickett (1 episode)
Mr. Bleeker (1 episode)
Mr. Somerset (1 episode)
Dr. Shelby
Hanford (1 episode)
Director (1 episode)
Reverend (1 episode)
Mr. Phillips
Major Damier (1 episode)
Dr. Bergman
Ronald Smith (1 episode)
Tommy Preston, Wyoming Hotel Owner
Franz Loeffler
Sen. Royce
Duval (1 episode)
Herbert Dean (1 episode)
Gov. Renault
Harry Knight - Lindbergh Student (uncredited)
Dr. Lomas
Napoleon Bonaparte
FBI Agent
Arnold Hammer
Simon the Zealot
Dr. Pryor
Frederick S. Fish
Dr. Zoldeck
Young Man (uncredited)
Hernandez (uncredited)
Dr. Arthur Carrington
Stefan (uncredited)
Emergency Room Orderly (uncredited)