Giaguaro Films

Anna's Sin tells the story of a black American actor (Johnson) who falls in love with a white woman playing Desdemona to his Othello on the Italian stage.

Police officer Carlo Canna, together with his colleague Gabriel and psychologist Loris Damiani, is investigating a series of mysterious murders committed by a serial killer. The killer murders in the same way as another serial killer who died years earlier—killed by Carlo himself.