The recreation of the murder and the subsequent investigation uses the techniques of an American thriller to gripping effect, though conspiracies are so commonplace nowadays that it's hard to imagine the impact it made at the time.
What are people saying?
What are critics saying?
Forty years on, it’s still an eye-catching, fast-paced watch, but the plaudits it won as an uncompromising thriller and landmark cinema seem as shaky as the film’s villainous military officers’ insistence that its central murder was an accident.
Z makes political intelligence seem chicer than skinny neckties.
Z doesn't communicate anything—except for the doubtful propositions that pacifists are more threatening to right-wingers than communists and that fascist terrorism and homosexuality go hand in hand.
New York Magazine (Vulture) by David Edelstein
The story of the "accidental" death of a peacenik politician (Yves Montand) and the investigator (Jean-Louis Trintignant) who unravels a right-wing conspiracy remains as fresh as a head wound.
ReelViews by James Berardinelli
Z is disquieting not only because the events actually happened, but because we sense they could happen again, closer to home.
Portland Oregonian by Marc Mohan
Avoiding the hyperbole and condescension that sometimes make it easy for ideological foes to dismiss the likes of Oliver Stone or Michael Moore, Costa-Gavras relies on the sterling performances of his actors (including Irene Papas as Montand's widow), and was rewarded with a pair of Oscar nominations.
Chicago Sun-Times by Roger Ebert
It is a film of our time. It is about how even moral victories are corrupted. It will make you weep and will make you angry. It will tear your guts out.
Hollywood political thrillers have absorbed this movie's you-are-there filmmaking grammar. Rarely have they re-created its fire.