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John Mills as Monsignor Blaise Meredith |
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Stéphane Audran as Contess Anne Di Sanctis |
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Jason Miller as Dr. Aldo Meyer |
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Paola Pitagora as Nina Sanduzzi |
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Leigh Lawson as Giacomo Nerone / James Black |
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Timothy West as Father Anselmo |
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Patrick Mower as 'Il Lupo' |
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Raf Vallone as Bishop Aurelio |
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Romolo Valli as Cardinal Marotta |
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Jack Hedley as Doctor |
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Daniel Massey as Nicholas Black |
| Writing | Morris L. West | Novel |
| Directing | Guy Green | Director |
| Writing | Morris L. West | Screenplay |
| Directing | Lester C. Muller | Assistant Director |
| Costume & Make-Up | Karl Lagerfeld | Costume Design |
| Sound | Bert Grund | Original Music Composer |
| Costume & Make-Up | Franco Carretti | Costume Design |
| Editing | Stefan Arnsten | Editor |
| Art | Werner Achmann | Art Direction |
| Camera | Billy Williams | Director of Photography |
| Production | Lutz Hengst | Producer |
| Production | Helmut Jedele | Producer |
| Production | Rolf Zehetbauer | Production Designer |
