Knock Knock opens in the UK today as well as in Argentina, Colombia, Ireland, Mexico and Peru. Reviews are starting to come in from the UK.
Craig Hunter reviewed the film for Screen Relish and gave it 3/5 stars.
Robbie Collins reviewed Knock Knock for The Telegraph and gave it 3/5 stars. He also tweeted that they hid it from the critics and Eli Roth tweeted back to keep the twists and turns from being revealed.
Sean Munsanje reviewed the film for FM104 and gave it 3/5 stars.
Update: Cine House has reviewed Knock KNock and they gave it 4 stars. I am assuming it is out of five but they didn’t specify.
Update X2: Joey Keogh reviewed the film for Wicked Horror and gave it 5/10.
Update X3: Kermode Uncut has posted a video clip on youtube. He and another critic talked about the fact that there was no press screening of Knock Knock. The Guardian critic had more fun then he thought he would.