In de jaren zeventig werden Wilma en John Hopper terechtgesteld voor een reeks gruwelijke moorden en verkrachtingen. Nu zijn ze terug, per ongeluk opgewekt uit de dood door een groep studenten geneeskunde bij een drugsexperiment. Eén voor één vallen de studenten ten prooi aan de twee moordlustige seksmaniakken die verschillende gedaanten kunnen aannemen, al blijft John Hopper makkelijk herkenbaar aan zijn... grote geslacht.
Nee, helaas is Someone's Knocking at the Door nog niet beschikbaar op Netflix in Nederland.
| Directing | Chad Ferrin | Director |
| Crew | Goethe Larsson | In Memory Of |
| Crew | R. Ghodsi | In Memory Of |
| Writing | Chad Ferrin | Screenplay |
| Writing | Roham Ghodsi | Screenplay |
| Writing | Rosie Roberts | Screenplay |
| Production | Roham Ghodsi | Producer |
| Production | Noah Segan | Producer |
| Production | Sean Cain | Producer |
| Production | John Santos | Line Producer |
| Production | Roham Ghodsi | Executive Producer |
| Production | Timothy Justin Hill | Executive Producer |
| Production | Michael Furguson | Executive Producer |
| Production | Noah Kleinman | Executive Producer |
| Camera | Niklas Larsson | Director of Photography |
| Camera | Codie Glann | First Assistant Camera |
| Art | Lourdes Corugedo | Production Design |
| Editing | Sean Cain | Editor |
| Editing | Jahad Ferif | Editor |
| Sound | Steven Hitselberger | Sound |
| Sound | Matt Olivo | Sound Designer |
| Lighting | David DeFino | Gaffer |
| Costume & Make-Up | Megan Nicoll | Makeup Artist |
| Camera | Greg Ewing | Key Grip |
| Sound | Ben Foreman | Boom Operator |
| Camera | Corey Corona | Steadicam Operator |
| Art | Lourdes Corugedo | Title Designer |
| Sound | Matt Olivo | Sound Effects Editor |
| Art | Paris Welles | Graphic Designer |
| Production | Jose I. Lopez | Production Assistant |
| Production | Nestor Welles | Production Assistant |
| Production | B. Arthur | Production Assistant |
| Crew | Finny Young | Craft Service |
| Crew | Francis Kortekaas | Thanks |
| Crew | Evan Richards | Thanks |
| Crew | Lucky Brown | Thanks |
| Sound | The Mae Shi | Songs |
| Writing | Chad Ferrin | Writer |
| Writing | Roham Ghodsi | Writer |
| Writing | Rosie Roberts | Writer |
| Sound | Brad Joseph Breeck | Music |
| Costume & Make-Up | Tom Devlin | Special Effects Makeup Artist |