 | Montgomery Clift als Fr. Michael William Logan |
 | Anne Baxter als Ruth Grandfort |
 | Karl Malden als Inspector Larrue |
 | Brian Aherne als Willy Robertson |
 | O.E. Hasse als Otto Keller |
 | Roger Dann als Pierre Grandfort |
 | Dolly Haas als Alma Keller |
 | Charles Andre als Father Millars |
 | Nan Boardman als Maid (uncredited) |
 | Henry Corden als Det. Sgt. Farouche (uncredited) |
 | Alfred Hitchcock als Man Crossing the Top of Long Staircase (uncredited) |
 | Ovila Légaré als Monsieur Villette (uncredited) |
 | Gilles Pelletier als Father Benoit (uncredited) |
 | Judson Pratt als Murphy (uncredited) |
| Rudi Fehr | Editor |
| Alfred Hitchcock | Producer |
| Dimitri Tiomkin | Original Music Composer |
| Alfred Hitchcock | Director |
| Ted Haworth | Art Direction |
| Robert Burks | Director of Photography |
| George James Hopkins | Set Decoration |
| Ray Heindorf | Music Director |
| Don Alvarado | Assistant Director |
| Sherry Shourds | Production Supervisor |
| Oliver S. Garretson | Sound |
| Orry-Kelly | Costume Design |
| Gordon Bau | Makeup Artist |
| George Tabori | Screenplay |
| Paul Anthelme | Theatre Play |
| William Archibald | Screenplay |
| Dimitri Tiomkin | Conductor |
| Paul LaCouline | Technical Advisor |
