 | Carla Gravina als Ippolita Oderisi |
 | Mel Ferrer als Massimo Oderisi |
 | Arthur Kennedy als Bishop Ascanio Oderisi |
 | George Coulouris als Father Mittner |
 | Alida Valli als Irene |
 | Mario Scaccia als Faith Healer |
 | Umberto Orsini als Dr. Marcello Sinibaldi |
 | Anita Strindberg als Greta |
 | Remo Girone als Filippo Oderisi |
 | Ernesto Colli als Possessed Man |
| Bruno Tocci als Possessed Man's Friend |
| Beatrice De Bono als Woman healed by statue |
 | Dhia Cristiani als voice dubbing: Alida Valli (uncredited) |
| John Francis Lane als Party guest |
 | Milla Johansson als Party guest (uncredited) |
| Bruno Nicolai | Music |
| Joe D'Amato | Director of Photography |
| Alberto De Martino | Writer |
| Ennio Morricone | Music |
| Vincenzo Mannino | Writer |
| Edmondo Amati | Producer |
| Gianfranco Clerici | Writer |
| Alberto De Martino | Director |
| Vincenzo Tomassi | Editor |
| Uberto Bertacca | Art Direction |
| Uberto Bertacca | Costume Design |
| Roberto Petrozzi | Sound |
| Fausto Ancillai | Sound Mixer |
| Michele Germano | Production Supervisor |
| Alfredo Nicolai | Production Manager |
| Klaus D. Pätzold | Production Manager |
| Giorgio Gentili | Assistant Director |
| Joe Pollini | Assistant Director |
| Euclide Santoli | Special Effects |
| Euclide Santoli | Makeup Artist |
