We can't tell if this is going to be terrible or absolutely brilliant.

Either way, it's going to be a lot of fun. Eli Roth seems convinced that he can shed his gorehound / slasher credentials and do serious filmmaking.

How is he doing that, you ask? By going after the next best thing - psycho-sexual thrillers! Hooray!

Keanu Reeves is a middle-aged architect who's wife has left him alone for the weekend. On a wet and windy night, two young girls arrive at his door and look for help.

From there, things take a turn as, well, just look at the trailer.

As we said, this can go either of two ways - either it'll be actually good (highly unlikely) or it'll be so terrible that it's actually good (highly likely).

Either way, we can't wait to see how Keanu Reeves reacts to the proposition of a threesome with two college students who are probably serial killers.

It's already debuted at this year's Sundance Film Festival, although there's been no word on a buyer for the film just yet.

If it goes through Sundance without a buyer, we may not see it on this side of the pond for some time. Not unlike John Wick, which we won't get to see until APRIL. JESUS.

As for Knock Knock, we're already prepping some punny titles for our review. Wanna hear some?

 - The Matri-XXX.

 - Bill's E-XXX-cellent Adventure.

 - Speed 3-some

- The Devil's Advocate, But With More Sex Probably (That one doesn't work so much)