|Il prato macchiato di rosso|
|Directed by||Riccardo Ghione|
|Screenplay by||Riccardo Ghione|
|Story by||Riccardo Ghione|
|Edited by||Cleofe Conversi|
|Music by||Teo Usuelli|
|Distributed by||Drago Film|
|Box office||₤56.364 million|
Emilia-Romagna, Italy, early seventies. A Unesco agent discovers that blood is contained in a bottle of wine produced by a well-known Italian winery. A couple of hippies in their wanderings come across Antonio who accompanies them to the villa where he lives with his sister and brother-in-law. In the sumptuous house the two young men meet strange characters: a gypsy woman, a prostitute and a disquieting drunkard. The landlord, Michelino Croci, reassures them by saying that he is only a wine producer and loves to host strange people. In reality, Mr. Antonio is a madman who created a mechanism, a sort of robot capable of sucking blood from human bodies.
Italian film critic and historian Roberto Curti described the film as mixing elements from the gothic genre, the thriller and a little bit of science fiction.
Shortly after the release of director Riccardo Ghione's previous film A cuore freddo, Ghione was working on his next film titled Vampiro 2000 which was shot in the village of Fiorenzuola d'Arda. Ghione announced a different film during this period, an adaptation of Il male oscuro, the autobiography by Giuseppe Berto, which never came to fruition. Vampiro 2000 eventually became retitled as Il pratto macchiato di rosso.
Il pratto macchiato di rosso was distributed theatrically in Italy by Drago Film and had its premiere on 2 March 1973 in Fiorenzuola d'Arda. The film grossed a total of 56,364,000 Italian lire domestically on its initial release. According to Curti, after the film's release it vanished into obscurity to only be brought back to attention on a home video release around 2017.