Carl Kolchak (as Darren Mc Gavin)
Louise Harper
Tony Vincenzo
Capt. Roscoe Schubert
Titus Berry
Prof. Crabwell
Llewellyn Crossbinder
Charisma Beauty
Tramp
Dr. Webb
Dr. Richard Malcolm
Police Officer (uncredited)
Reporter (uncredited)
Restaurant Woman (uncredited)
Bar Patron (uncredited)
Underground Tour Guide (uncredited)
Man on Tour (uncredited)
Charlie the Bartender (uncredited)
Janie Watkins (uncredited)
Ethel Parker (uncredited)
Wilma Krankheimer (uncredited)
Detective (uncredited)
Sheila (uncredited)
Joyce Gabriel (uncredited)