A devoted husband and father helps two stranded young women who knock on his door, but his kind gesture turns into a dangerous seduction and a deadly game of cat and mouse.

After a Black Friday riot ends in tragedy, a mysterious Thanksgiving-inspired killer terrorizes Plymouth, Massachusetts - the birthplace of the holiday. Picking off residents one by one, what begins as random revenge killings are soon revealed to be part of a larger, sinister holiday plan.

The college friends Paul, Karen, Bert, Marcy and Jeff rent an isolated cabin in the woods to spend a week together. When they arrive, a man contaminated with a weird disease asks for help to them, but they get in panic and burn the man, who falls in the water reservoir and dies. The whole group, except Karen, makes a pact of drinking only beer along the week without knowing where the dead body is. When Karen drinks tap water and gets the disease, the group begins their journey to hell.

When a devoted husband and father is left home alone for the weekend, two stranded young women unexpectedly knock on his door for help. What starts out as a kind gesture results in a dangerous seduction and a deadly game of cat and mouse. A sexy new thriller from director Eli Roth and written for the screen by Eli Roth & Nicolás López & Guillermo Amoedo and story by Anthony Overman and Michael Ronald, KNOCK KNOCK stars Keanu Reeves as the family man who falls into temptation and Lorenza Izzo and Ana de Armas as the seductresses who wreak havoc upon his life, turning a married man's dark fantasy into his worst nightmare. KNOCK KNOCK will be released by Lionsgate Premiere in theaters and On Demand on October 9th.