Someone's Knocking at the Door is currently streaming on Tubi

Someone's Knocking at the Door (2009)74 minFantasy, HorrorRating 40/100

Returning to the med school where they were test subjects, a pair of serial killers use brutal sex acts to terrorize a group of drugged-out students.

Cast: Noah Segan, Andrea Bunker, Elina Madison, Ezra Buzzington, Jon Budinoff, Silvia Spross, Ricardo Gray

Director: Chad Ferrin