On screen
Cast
165 credited performers
Darren McGavin
Carl Kolchak
Simon Oakland
Tony Vincenzo
Jack Grinnage
Ron Updyke
Ruth McDevitt
Elderly Woman
John Fiedler
Gordon Spangler
Carol Ann Susi
Monique Marmelstein
Richard Kiel
The Monster
Ramon Bieri
Captain Joe Baker
Keenan Wynn
Capt. Joe 'Mad Dog' Siska
Dennis McCarthy
Guard
Tom Anfinsen
Guard (uncredited)
Robert Easton
Bernard Carmichael
Maureen Arthur
Woman Speaker
John Alvin
Dr. Carrie
Milt Kamen
Gingrich
Henry Jones
Captain Julian Wells
Lenore Kasdorf
Girl
Jackie Vernon
Character not listed
Lara Parker
Madelaine Perkins
Sharon Farrell
Character not listed
Erik Estrada
Character not listed
Barbara Rhoades
The Secretary
Cliff Norton
Arnie Wisemore
Lucille Benson
Character not listed
George Savalas
Kaz (as Demosthenes)
Antonio Fargas
Sweetstick Weldon
Bert Freed
Capt. Akins
Fritz Feld
Waiter
Severn Darden
Dr. Aaron Pollack
Michael Strong
Walter Green
Jimmy Hawkins
Jay Remy
Philip Carey
Sgt. Mayer
Ben Masters
Character not listed
Diana Quick
Ariel
Jim Backus
Character not listed
Pippa Scott
Character not listed
Barbara Luddy
Woman
Greg Finley
Dr. Phillips
Hans Conried
Character not listed
Dwayne Hickman
Character not listed
Val Bisoglio
Victor Friese
Myron Healey
Col. Wright
Dick Van Patten
Alfred Brindle
Randy Boone
Gene the Fiddler
Elaine Giftos
Nurse Janis Eisen
Kathleen Nolan
Faye Kruger
James Griffith
Schwartz
Bob Hastings
Hallem
Joshua Shelley
George
Carolyn Jones
Character not listed
Marvin Miller
Lecturer
Frank Aletter
Character not listed
Sondra Currie
Character not listed
John Marley
Captain Maurice Molnar
Albert Paulsen
Dr. James Verhyden
John Dehner
Character not listed
Cathy Lee Crosby
Character not listed
Charles Aidman
Police Captain Leo Winwood
Henry Beckman
Senator Stephens
Len Lesser
Crowley
Elisabeth Brooks
Natalie - Lab Assistant
Joyce Jillson
Diana Lanier
Suzanne Charny
Catherine Rawlins
David Doyle
Cardinale
Carmen Zapata
Character not listed
Nina Foch
Madame Trevi
Jay Robinson
Character not listed
Byron Morrow
Dr. Cowan
Frank Marth
Colonel Brody
Kevin Michael Richardson
Character not listed
Joseph Sirola
Benjamin Sposato
Julie Adams
Mrs. Walker
Phil Leeds
Howard Gough
John Mitchum
Janitor
Victor Jory
Charles Rolling Thunder
Sorrell Booke
Character not listed
Madlyn Rhue
Maria
Henry Brandon
The Man
Jesse White
Character not listed
Regis Cordic
Dr. Peel
John Hoyt
Dr. Beckwith
Kathleen Freeman
Character not listed
J. Pat O'Malley
Caretaker
Maidie Norman
Librarian
Ned Glass
Apartment Superintendent
Tom Drake
Don Kibbey
Naomi Stevens
Mrs. Miriam Goldstein
Marvin Kaplan
Delgado
Army Archerd
Man
Hunter von Leer
Character not listed
Richard Bakalyan
The 1st Killer
Larry Linville
Character not listed
Victor Campos
Character not listed
Sandra Gould
Landlady
Kathie Browne
Lieutenant Irene Lamont
James Murtaugh
Character not listed
Scatman Crothers
Uncle Filemon
Don 'Red' Barry
Tyrell Security Guard
Mary Wickes
Dr. Bess Winestock
Virginia Gregg
Dr. Hollenbeck
William Smith
Jim Elkhorn
John Doucette
Deputy Sample
Alice Ghostley
Dr. Agnes Temple
Milton Parsons
Character not listed
Bernie Kopell
Doctor Gravanites
Art Metrano
Character not listed
Katherine Woodville
Dr. Helen Lynch
Eddie Firestone
Character not listed
Paulene Myers
Marie Juliette 'Mamalois' Edmonds
James Gregory
Captain Quill
Michael Fox
Frank Wesley
Jan Murray
Ichabod Grace
Priscilla Morrill
Griselda
Jamie Farr
Jack Burton
Rudy Challenger
Stanley Wedemyer
Robert Yuro
Detective Webster
Larry Storch
Swede
Paul Picerni
Humane Society Man
Douglas Fowley
The Super
Pat Harrington Jr.
Thomas Kitzmiller
Peter Leeds
Photographer
Henry Slate
2nd Killer
Phil Silvers
Harry Starman
Murray Matheson
Mr. Lane-Mariot
Creed Bratton
Man Entering Lab
Beatrice Colen
Jane Plumm
Richard Gautier
Mel Tarter
Ken Lynch
Capt. Warren
Mews Small
Masseuse
Don Mantooth
Policeman
Rob Berger
Mail Boy
Roberta Collins
Det. Cortazzo
Clint Young
Driver
Mickey Gilbert
The Ripper
William Daniels
Police Lt. Jack Matteo
Anne Whitfield
Call Girl
Noel De Souza
Chandra
Nita Talbot
Paula Griffin
Eric Braeden
Bernhardt Stieglitz
Barry Cahill
Dr. Alan Ross
Lewis Charles
George Levitt
Fred Beir
Ryder Bond
Virginia Vincent
Mrs. Markoff
Alice Backes
Dr. Shropell
Carol Veazie
Mrs. Sherman
Patricia Estrin
Felicia Porter
Tom Skerritt
Robert W. Palmer
Julie Gregg
Susan Driscoll
Ellen Weston
Lorraine Palmer
John Myhers
Senator James Talbot
Jeanne Cooper
Dr. Kline
William Mims
Officer Hale
Robert DoQui
Park Policeman
Dick Patterson
Stephan Wald
Stanley Adams
Bartender
Bill Welsh
T.V. Announcer
David Lewis
Auctioneer
Johnny Silver
Pepe LaRue - Morris Shapiro
Brian Avery
Record Producer
Maurice Marsac
Henri Villon
Robert Cornthwaite
Dr. Hartfield
Tom Bosley
Jack Flaherty
Margaret Avery
Ruth Van Galen
Frank Campanella
Ted Chapman
Denise Dillaway
Debbie Fielder (uncredited)