Dr. Robert Kier
John Forsythe
Joe Tate
Pat Harrington, Jr.
Dr. Anton Balinowski
Michael C. Gwynne
Nikki Kier
Shelly Juttner
Vince Kier
Christian Juttner
Barbara, Secretary to Dr. Kier
Ellen Weston
Julio Medina
Jay W. MacIntosh
Priscilla Garcia
Anne Newman Bacal
Stack Pierce
Jim Storm
Claire Parlini
Katherine Woodville
Paul Mantee
Angela Elayne Gibbs
Casey MacDonald
Jim Boles
Dick Valentine
Jacqueline Weiss
Gavan O'Herlihy
Mr. Addison
Liam Dunn
Mr. Brown
Bill McKinney
Jon Cedar
Ann Kilmer
Season Hubley
John Romano
Dr. Albert Scanlon
Anthony Zerbe
Laura Kier
Beverly Garland
Dr. Ernest Wilson
John McIntire
Betty Kier
Yvonne Gilbert
Louise Sorel
Kennedy Brown
Lance Kerwin
Director
Tom Gries
Executive Producer
Jerry Thorpe
Associate Producer
Sid McCoy
Producer
John Furia, Jr.
Original Music Composer
David Shire
Writer
Editor
Michael A. Hoey
Howard Dimsdale
Art Direction
Walter Scott Herndon
Director of Photography
Jack Woolf