Sex with a Stranger

Sex with a Stranger is a 1986 pornographic horror film directed by Chris Monte, and written by Cash Markman and Chad Randolph.

Trevor and Priscilla have sex in a bedroom, and Joy and Inspectorwho was in the midst of donning womens undergarments when Joy walked in on him do the same elsewhere. Afterward, the inspector is killed when he falls or is shoved down a flight of stairs, and his body disappears shortly after the others find it. Wanting to know who summoned them, and in need of the money they have been promised, the remaining guests decide to stay despite the risk of being murdered.Slick and Sugar go off to have sex, and Priscilla is found dead, having been electrocuted while using a sabotaged vibrator. Thinking Priscillas automatic camera could offer a clue as to what happened to her, Slick and Sugar try to develop the film in it, while Trevor mourns Priscillas death by downing a glass of wine, which has been spiked with rodenticide. Joy coerces Doctor Rivameter into having sex on the bed containing Priscilla and Trevors bodies, but they are interrupted midcoitus by screams coming from another room. ........

Source: Wikipedia