I Vampiri is a 1957 Italian horror film directed by Riccardo Freda and completed by the film's cinematographer, Mario Bava. It stars Gianna Maria Canale, Carlo D'Angelo and Dario Michaelis. The film is about a series of murders on young women who are found with their blood drained. The newspapers report on a killer known as the Vampire, which prompts young journalist Pierre Lantin to research the crimes. Lantin investigates the mysterious Du Grand family who lives in a castle occupied by Gisele Du Grand who is in love with Lantin. She lives with her aunt, who hides her face in a veil, as well as the scientist Julian Du Grand, who is trying to find the secret to eternal youth.

Mario Bava was an Italian filmmaker who worked variously as a director, cinematographer, special effects artist and screenwriter. His low-budget genre films, known for their distinctive visual flair and stylish technical ingenuity, feature recurring themes and imagery concerning the conflict between illusion and reality, as well as the destructive capacity of human nature. Widely regarded as a pioneer of Italian genre cinema and one of the most influential auteurs of the horror film genre, he is popularly referred to as the "Master of Italian Horror" and the "Master of the Macabre".