Someone's Knocking at the Door (2009) 2009, Fantasy, Horror, United States Someone’s Knocking at the Door (2009) Duration: 1H20M Description: 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… Trailer ↗ United States 2009 Fantasy Horror