- Country: Italy
- Genres: Thriller
- Release: 1979-05-31
- Director: Raimondo Del Balzo
- Writers: Raimondo Del Balzo , Candido Simeone
- Language: Italian
- Stars: Antonio Cantafora , Vincenzo Crocitti , Christiana Borghi , Elisabetta Valgiusti , Monica Como , Giancarlo Prete , Dirce Funari , Vittorio Sgorlon
- Runtime: 83 min
- Awards: N/A
- AKA: La domenica del diavolo (Italy) , Geceyarısı Mavisi (Turkey) , Midnight Blue (United States of America) , Midnight Blue (Brazil) , Midnight Blue (Italy) , Midnight Blue (United Kingdom) , Midnight Blue , Midnight Blue (France, French Republic) , Week-end me poly sex (Greece)
- Plot: Three beautiful female athletes take a weekend off from training to vacation at a relative's villa complete with private beach. While relaxing, enjoying the water, and topless sunbathing the girls' weekend alone is interrupted by three escaped criminals on the run. Led by Pierre Luigi, the three criminals take the girls hostage and submit them to torture and rape before the girls get their bloody revenge.
- IMDB:tt0128347
Midnight Blue Cast · · · ALL
Raimondo Del Balzo
Director
Antonio Cantafora
Pier Luigi
Vincenzo Crocitti
Mario
Christiana Borghi
Rita
Elisabetta Valgiusti
Elena
Giancarlo Prete
Bruno
Dirce Funari
Silvia