The Third Lover (French: L'Œil du malin), also titled The Eye of Evil, is a 1962 French–Italian crime drama film directed by Claude Chabrol.

Obsessed to find the dark spot behind their seemingly harmonious marriage, he makes advances to Hélène and, after she tactfully rejects him, spies upon her, convinced that she has an affair.

Hélène pretends that Andreas knows of her affair but asks Albin not to show the pictures to her husband, explaining that their marriage gave both a mainstay after living a life of instability.

[3] In Robin Wood and Michael Walker's retrospective analysis in Claude Chabrol (1970), they compare The Third Lover with Roman Polanski's Knife in the Water, which came out a year later.

They write, "Knife in the Water was an enormous art house success, l'Oeil du matin a complete box office failure.