Hot Line (1970)

An average family man, who has a mistress on the side, discovers his mistress is bisexual - and, to make matters worse, is having sexual relations with his wife. When he confronts the two women, they respond by grabbing and spreadeagling him to a bed, and then proceed to have sex with the helpless husband.

Released June 25, 1970 62 min None+

Keywords: imdb.husband-wife-relationship, imdb.mistress, imdb.lesbian, imdb.bisexual, imdb.tied-up, imdb.tied-to-a-bed, imdb.man-tied-up + 3 more, imdb.spreadeagled, imdb.sex-scene, imdb.menage-a-trois