Young lives are forever changed when a gunman opens fires in a Canadian school, determined to kill as many women as possible.

A dramatization of the tragic Montreal Massacre, the events of the day are documented through the eyes of two student witnesses and the perpetrator, with the horrors of the carnage leaving a legacy far beyond the shooting itself.

Directed by Denis Villeneuve (Arrival, Sicario) and shot in stark black‐and‐white by Pierre Gill, Polytechnique is a profound achievement from one of contemporary cinema's most original directors.