Ed Begley Jr.
Frank
E.J. André
Mr. McCauley
Ann Doran
Mrs. McCauley
Christina Hart
Helen
O
Orin Cannon
Old Farmer
J
Jean Le Bouvier
Mrs. Cantrell
D
Dick McGarvin
Mr. Dorset
K
Karen Hurley
Mr. Dorset
Patrick Macnee
Dr. Gheria
Anjanette Comer
Alexis
Elisha Cook Jr.
Karel
Horst Buchholz
Michael
Joan Hackett
Mother
Lee Montgomery
Bobby
Michael Talbott
Vinnie McCauley (uncredited)
G
Gail Bowman
Maria (uncredited)
John Dehner
Narrator (voice) (uncredited)
J
Joan Lemmo
Eva (uncredited)
J
Jeff Reese
Young Man (uncredited)
L
Lars Green
Demonic Bobby (uncredited)