Borniche (Alain Delon) has three difficult tasks before him: to keep a rein on police violence, to cut through bureaucratic red tape in order to do his job, and to find Buisson (Jean-Louis Trintignant) and put him behind bars. Based on a true story which takes place in 1947, Buisson is a psychopath who enjoys finding excuses for blowing people to oblivion while ostensibly just robbing them. In his deranged way, Buisson achieves some kind of harmony with Borniche and the police.
~ Clarke Fountain, All Movie Guide