 | Umberto Spadaro als Detective Pietrangeli |
 | Delia Scala als Silvia Pietrangeli |
 | Andrea Bosic als Aldo Manni (as Andrea J. Bosic) |
 | Marco Vicario als Giorgio Morelli |
| Natale Cirino als Palermo |
 | Dorian Gray als Vandina |
| Marga Cella als Fosca |
 | Amina Pirani Maggi als Giovanna |
| Dina Perbellini als la signora Rosini |
 | Giacomo Furia als Leprotti |
 | Enrico Glori als il maggiore |
 | Loris Gizzi als il commendatore Marzocchi |
| Nino Marchetti als l'operaio dell'agenzia di pulizie |
| Baccio Bandini | Director |
| Otello Colangeli | Editor |
| Aldo Calpini | Sound |
| Renato del Frate | Director of Photography |
| Gino Marinuzzi Jr. | Original Music Composer |
| Baccio Bandini | Producer |
| Sandro Continenza | Story |
| Sandro Continenza | Screenplay |
| Ennio De Concini | Story |
| Ennio De Concini | Screenplay |
| Mario Monicelli | Story |
| Mario Monicelli | Screenplay |
| Steno | Story |
| Steno | Screenplay |
| Nanni Loy | First Assistant Director |
| Enzo Merolle | Unit Manager |
| Vincenzo Taito | Unit Manager |
| Antonio Brant | Production Secretary |
| Mario Musy Glori | Production Secretary |
| Alberto Boccianti | Production Design |
| Libero Politi | Makeup Artist |
| Ugo Nudi | Camera Operator |
| Serena Benvenuti | Script Supervisor |
| Vittorio Musy Glori | Production Manager |
