The film examines the death of the anarchist Giuseppe Pinelli, who fell from the fourth floor of the police headquarters in Milan December 15, 1969, after being stopped following the Piazza Fontana bombing.
| Directing | Elio Petri | Director |
| Writing | Elio Petri | Screenplay |
| Writing | Ugo Pirro | Screenplay |
| Directing | Nelo Risi | Director |
| Camera | Luigi Kuveiller | Director of Photography |
