Gianni's career threatened when his wife Angela fakes assault. With lover Eva, they plan Angela's murder. Blackmailed by witness, Angela has loyal maid Rosy and a mysterious man around.

Gianni is a political man with a good career waiting for him. Angela is his wife and she fakes an assault and a rape in a cinema. Eva is Gianni's lover and Angela's friend. Gianni and Eva decide to use the pretext of the assault to kill Angela. Later on Angela is blackmailed by a man who was present at her act. In the background there are Rosy, her maid always present, and a puzzling man who appears and disappears and makes strange phone calls.—Baldinotto da Pistoia