Knock once to wake her from her bed,

Twice to raise her from the dead…

When troubled teen Chloe (Lucy Boynton, Sing Street) defies a local legend's warning and knocks at the door of a long-abandoned house, she unleashes a horror beyond her darkest nightmares – the vengeance of a relentless child-stealing witch. With nowhere else to turn, Chloe heads for the country home of her estranged mother, Jess (Katee Sackhoff, Battlestar Galactica) – a recovering addict who is desperate to reconnect with her daughter. Now, mother and daughter must once again learn to trust each other if they have any hope of surviving the relentless force shadowing Chloe. A "well-crafted thriller" (Bloody Disgusting) that's "rooted in the real world but dipping its toes into a Brothers Grimm fairy tale" (Diabolique Magazine), Don't Knock Twice is the wellspring of your next nightmare.