Eli Roth is at it again. The master of cinematic explorations into our deepest, darkest places is, with Knock Knock, taking a look at how years of love, trust, commitment and fidelity can be erased in a mere minute with a single word. The word? "Yes." And it is with that word that Evan Webber (Keanu Reeves) is seduced into a dangerous game of cat and mouse that turns his ultimate fantasy into his worst nightmare.

In this tense and seductive Fandango Movieclips exclusive clip from Knock Knock, Evan first meets the stunning Genesis (Lorenza Izzo) and Bel (Ana de Armas) when they show up on his doorstep rain-soaked and in need of assistance.

Knock Knock enters theaters October 9.