MURDER WEAPON: 2 ladies leave a sanitarium "cured" after murdering one of their boyfriends, and hold a party and the boys start to get offed. DEADLY EMBRACE: Erotic thriller stars Jan-Michael Vincent as a husband who spies on his wife. NIGHTMARE SISTERS: 3 geeky college students invite some geeky guys over for a séance, causing the girls to become sex-crazed vixens.