Characters played by Lyle Talbot
Lt. Bob Bennett
Characters played by Irving Pichel
Dr. Herbert Stander
Characters played by Julie Bishop
Joan Martel
Characters played by Sheila Bromley
Poison Mary Slavish
Characters played by Anthony Averill
Dirk - Stander's Aide
Characters played by Russell Hopton
Harry 'The Carver' Bogard
Characters played by Julian Madison
Paul - Stander's Aide
Characters played by Eddie Holden
Ole Olson
Characters played by Wheeler Oakman
John Ritter
Characters played by Stanley Blystone
Capt. Mike Briggs
Characters played by Leander De Cordova
Ezra Matthews
Characters played by Demetrius Alexis
Steve Murano
Characters played by Skelton Knaggs
Jesse Bixel
Characters played by Carleton Young
Reporter
Characters played by William Chapman
Bill
Characters played by Jack Gardner
Reporter
Characters played by Adia Kuznetzoff
Adolph Krantz
Characters played by Bert LeBaron
Sailor
Characters played by Fred Walton
Fred