L'Alpagueur is a free-lance spy from the French secret agency. He's put on the investigation about L'epervier, a serial-killer who employs young boys to help him robbing banks before killing them.
| Directing | Philippe Labro | Director |
| Writing | Jacques Lanzmann | Dialogue |
| Sound | Michel Colombier | Original Music Composer |
| Camera | Jean Penzer | Director of Photography |
| Editing | Jean Ravel | Editor |
| Writing | Philippe Labro | Screenplay |
| Writing | Jacques Lanzmann | Screenplay |
| Production | Jean-Paul Belmondo | Producer |
| Art | Bernard Evein | Production Design |
| Costume & Make-Up | Paulette Breil | Costume Design |
| Costume & Make-Up | Charly Koubesserian | Makeup Artist |
| Sound | Bernard Bats | Sound |
