Beloved priest Father Thomasino is murdered in a San Francisco alley, and the police have few clues. But traffic cop Joe Martini becomes obsessed with finding the killer; he suspects Sylvio Malatesta. Ordered off the case, Joe turns in his badge and investigates alone. Soon he is a close friend of the Malatesta family, all delightful people, especially lovely cousin Anna. Uncertain whether Sylvio is guilty or innocent, Joe is now torn between old and new loyalties.
| Writing | Edwin Blum | Story |
| Directing | Joseph Pevney | Director |
| Writing | Edwin Blum | Screenplay |
| Camera | Russell Metty | Director of Photography |
| Production | Robert Arthur | Producer |
| Editing | Ted J. Kent | Editor |
| Lighting | Max Nippell | Gaffer |
| Camera | Roy Vaughn | Assistant Camera |
| Sound | Henry Janssen | Sound |
| Sound | Hans J. Salter | Music |
| Sound | Henry Vars | Music |
| Art | Alexander Golitzen | Art Direction |
| Art | Eric Orbom | Art Direction |
| Art | Russell A. Gausman | Set Decoration |
| Art | Ray Jeffers | Set Decoration |
| Costume & Make-Up | Bill Thomas | Costume Design |
| Costume & Make-Up | Joan St. Oegger | Hairstylist |
| Costume & Make-Up | Bud Westmore | Makeup Artist |
| Costume & Make-Up | Mark Reedall | Makeup Artist |
| Costume & Make-Up | Merle Reeves | Hairstylist |
| Production | Lew Leary | Unit Production Manager |
| Production | Foster Thompson | Assistant Production Manager |
| Directing | Joseph E. Kenney | Assistant Director |
| Directing | Wilbur Mosier | Assistant Director |
| Directing | Bernard Wiesen | Assistant Director |
| Art | Walter Hammond | Props |
| Art | Solly Martino | Props |
| Art | William Nunley | Props |
| Camera | Jack Gereghty | Still Photographer |
| Camera | Ledge Haddow | Assistant Camera |
| Camera | Philip H. Lathrop | Camera Operator |
| Production | Phil Benjamin | Casting Assistant |
| Costume & Make-Up | Claire Cramer | Wardrobe Coordinator |
| Costume & Make-Up | Nevada Penn | Wardrobe Coordinator |
| Editing | Stanley Kallis | Assistant Editor |
| Sound | Joseph Gershenson | Music Supervisor |
| Sound | Irving Gertz | Music |
| Sound | Henry Mancini | Music |
| Sound | Frank Skinner | Music |
| Sound | Herman Stein | Music |
| Directing | Adele Cannon | Script Supervisor |
| Production | Charles Baqueta | Production Coordinator |
| Crew | Leon Charles | Dialogue Coach |
