My Dear Killer (Italian: Mio caro assassino) is a 1972 Italian-Spanish giallo film directed by Tonino Valerii and starring George Hilton, Marilù Tolo, Patty Shepard, Helga Line, Salvo Randone and William Berger.

Umberto Paradisi, a private investigator for an insurance company, had been decapitated by an excavator at a rural swamp area.

Peretti proceeds to question other people connected with the Moroni case, including Stefania's traumatized mother, her uncle Oliviero—who lost one of his hands during the war—along with his wife, other relatives, and the family's servants.

That night, the murderer tries to kill an elderly lady who unknowingly came into possession of the mirror, but Peretti arrives at the scene just in time, forcing him to flee.

Peretti orders the police to arrest Oliviero as the camera focuses on the back of the mirror, revealing the clue to the killer's identity—a human figure, drawn by Stefania, missing one of its hands.

And we had the idea of the naked little girl that appears at the door of his studio during the commissioner's visit..."[5] My Dear Killer was released in Italy on February 3, 1972 where it was distributed by Jumbo Cinematografica.