cast
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Gregory Peck
Robert Thorn
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Lee Remick
Katherine Thorn
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David Warner
Keith Jennings
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Billie Whitelaw
Mrs. Baylock
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Harvey Stephens
Damien Thorn
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Patrick Troughton
Father Brennan
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Martin Benson
Father Spiletto
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Robert Rietti
Monk
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Tommy Duggan
Priest
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John Stride
Psychiatrist
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Holly Palance
Young Nanny
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Anthony Nicholls
Dr. Becker
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Roy Boyd
Reporter
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Sheila Raynor
Mrs. Horton
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Robert MacLeod
Horton
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Bruce Boa
Thorn's Aide
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Don Fellows
Thorn's Second Aide
- Patrick McAlinney Photographer
- Dawn Perllman Chambermaid
- Nancy Mannigham Nurse
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Miki Iveria
First Nun
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Betty McDowall
American Secretary
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Nicholas Campbell
Marine
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Burnell Tucker
Secret Service Man (uncredited)
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Ronald Leigh-Hunt
Gentleman at Rugby Match (uncredited)
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Guglielmo Spoletini
Italian Taxi Driver (uncredited)
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Freda Dowie
Nun (uncredited)
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Ya'ackov Banai
Arab (uncredited)
- Harvey Bernhard Man Walking across Street (uncredited)
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Michael Byrne
Monk (uncredited)
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Leo McKern
Carl Bugenhagen (uncredited)
- Bill Reimbold General (uncredited)
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Michael Leader
Rugby Match Spectator (uncredited)
- Mary Burleigh Rugby Match Spectator (uncredited)
- Ann Barrass Guest at Damien’s Birthday Party
- Mark Baxter Boy (uncredited)
- Victor Harrington Monk (uncredited)
- Suzanne Heimer Rugby Match Spectator
- Walter Henry Hospital Orderly
- Trevor Wedlock Man Buying Ice Cream at Safari Park (uncredited)