Carl Kolchak
Darren McGavin
Louise Harper
Jo Ann Pflug
Wilma Krankheimer
Virginia Peters
Janie Watkins
Kate Murtagh
Dr. Webb
Ivor Francis
Joyce Gabriel
Diane Shalet
Policewoman Sheila
Anne Randall
Restaurant Woman
Francoise Birnheim
Merissa (Ethel Parker)
Regina Parton
Police Officer (uncredited)
David Armstrong
Reporter (uncredited)
Margaret Bacon
Al Beaudine
Tony Vincenzo
Simon Oakland
Bar Patron (uncredited)
Loren Brown
Bill Clark
Robert Cole
Tony Dante
Underground Tour Guide (uncredited)
George DiCenzo
Man on Tour (uncredited)
Rudy Doucette
Bob Harks
Chester Hayes
Alan Marston
Charlie the Bartender (uncredited)
Bill McLean
Capt. Schubert
Scott Brady
Detective (uncredited)
Joe Phillips
Al Roberts
Arnold Roberts
Hank Robinson
Bob Templeton
George Tracy
George Washburn
Mr. Berry
Wally Cox
Prof. Crabwell
Margaret Hamilton
Dr. Richard Malcolm
Richard Anderson
Llewellyn Crossbinder
John Carradine
Tramp
Al Lewis
Charisma Beauty
Nina Wayne
Set Decoration
Charles B. Pierce
Director
Dan Curtis
Producer
Makeup Artist
William Tuttle
Original Music Composer
Bob Cobert
Stunts
Nick Dimitri
Writer
Richard Matheson
Stunt Coordinator
Dick Ziker
Editor
Folmar Blangsted
Casting
Hoyt Bowers
Production Design
Trevor Williams
Characters
Jeffrey Grant Rice
Director of Photography
Robert B. Hauser