The title Die Teuflischen Schwestern (1976) may not get the blood boiling, but the international English title for the film, Sexy Sisters, should get your attention. It’s one of the first appearances of European porn star Karine Gambier, a busy platinum blonde with dark eyes and richly red lips. Fans of drive-in skinema know her from Women in Cell Block 9 (1977), a kinky girls-behind-bars drama, but she can also be obscene in the Swiss drama Voodoo Passion (1977), which is rife with lesbianism. There’s also the German production Schulmädchen-Report 11: Probieren geht über Studieren (1977), also known as both Blue Dreams and Confessions of a Naked Virgin. Naked Karine is, but she’s no virgin, as she proved in movie after explicit movie, her last being European Sex Vacation (1989), a destination any man would want to visit.