Characters played by Richard Denning
Frank Brooks
Characters played by Kathleen Crowley
Nora King
Characters played by Virginia Grey
Vicki Harris
Characters played by Richard Reeves
Jim Wilson
Characters played by Robert Roark
Davis
the Killer
Characters played by Mort Marshall
Charles Otis
Characters played by Arthur Space
Lt. General Wood
Characters played by Whit Bissell
Tom
Chief research scientist
Characters played by James Drake
Lieutenant
Characters played by Steve Pendleton
Colonel
Characters played by House Peters Jr.
Technician