Wild Cactus (1993)

Philip and Alexandria Marcus are a young couple who decide to take a vacation to a friend's house in the Arizona desert to rekindle their passion, only to have their vacation turn into a nightmare when they cross paths with a homicidal ex-con named Randall and his seductive hitchhiking partner/lover Maggie whom they hold Philip and Alex hostage in their house which begins a web of mind games, deceit and lust among all four involved.