Troubled teen Chloe (Lucy Boynton) has little interest in reconnecting with her estranged mother Jess (Katee Sackhoff), a sculptor and recovering drug addict who has managed to clean up her act. Chloe has a change of heart, however, when she discovers that the urban legend of a witch who appears after two knocks on the door is actually true, and she needs mom's help to fight off the malevolent monster. Javier Botet, Nick Moran, Pooneh Hajimohammadi also star in this supernatural horror tale from the U.K. 93 min. Widescreen; Soundtrack: English; Subtitles: English.