Someone's Knocking at the Door (2009)

Returning to the medical school where they were test subjects decades ago, a pair of outrageously twisted serial killers use shockingly brutal sex acts to start killing off a group of drugged-out med students.

Director: Chad Ferrin

Cast: Noah Segan, Andrea Bunker, Ezra Buzzington, Elina Madison, Silvia Spross, Jon Budinoff, Ricardo Gray, Timothy Muskatell, Lew Temple, Vernon Wells, Jordan Lawson, Mary Rings, Joseph Pilato, Trent Haaga, David Z. Stamp, Sean Cain, Amy Szychowski, Casey Powell