 | Alain Delon als Daniele Dominici |
 | Sonia Petrovna als Vanina Abati |
 | Giancarlo Giannini als Giorgio Mosca aka 'Spider' |
 | Renato Salvatori als Marcello |
 | Alida Valli als Marcella Abati - Vanina's mother |
 | Adalberto Maria Merli als Gerardo Favani |
 | Salvo Randone als professeur Porra |
 | Lea Massari als Monica |
 | Fabrizio Moroni als Fabrizio Romani |
 | Sandro Moretti als Leo Montanari |
 | Patrizia Adiutori als Valeria |
 | Nicoletta Rizzi als Elvira |
 | Carla Mancini als Female Student |
 | Pino Ammendola als Ragazzo in discoteca (uncredited) |
 | Liana Del Balzo als Signora Dominici, Daniele's mother (uncredited) |
| Roberto Lande |
 | Krista Nell als Martine - the girl reading Daniele's palm (uncredited) |
 | Maria Tedeschi als The Bespectacled Lady at the Funeral (uncredited) |
| Valerio Zurlini | Director |
| Dario Di Palma | Director of Photography |
| Mario Morra | Editor |
| Piera Gabutti | Assistant Editor |
| Enzo Lucarini | Administration |
| Luca Sabatelli | Costume Design |
| Danilo Moroni | Sound Mixer |
| Massimo Quaglia | Assistant Editor |
| Alberto Bartolomei | Sound Mixer |
| Blasco Giurato | Camera Operator |
| Maynard Ferguson | Musician |
| Bruno Zanoli | Sound |
| Gianni Basso | Musician |
| Gabriella Borzelli | Hairstylist |
| Enrico Tovaglieri | Production Design |
| Amato Garbini | Makeup Artist |
| Averoe Stefani | Production Manager |
| Valerio Zurlini | Story |
| Enrico Medioli | Screenplay |
| Valerio Zurlini | Screenplay |
| Mario Nascimbene | Original Music Composer |
| Camillo Teti | Line Producer |
| Roberto Pregadio | Conductor |
| Paolo Pietrangeli | First Assistant Director |
| Franca Invernizzi | Script Supervisor |
| Gilberto Scarpellini | Unit Manager |
| Franco Gambarana | Assistant Set Decoration |
| G.B. Poletto | Still Photographer |
| Sergio Bonotti | Producer |
