Aldo Serio

Inspector Angelo De Paul is assigned to investigate a horrifying series of murders that have gripped Venice and left the authorities baffled.

A pharmacist is murdered, and a woman happens to see the culprit leave the scene. She soon finds herself being stalked by the killer.

Former shepherds return to Sardinia from Milan in order to avenge a brother wantonly killed by bandits. In describing the grinding contrasts between places and personages of old and new Sardinia, director Piero Livi does not falter, photographing faithfully a desolated land, stuck in the past but alienated from traditional beliefs.