matt lynch’s review published on Letterboxd:
Fun! Draws out the suspense a little too long before really escalating things but when it does, look out. Actually got a startled "Whoa!" out of me. Whannell makes good use of negative space and fun camera tricks to maximize the tension of exactly where you know the guy has to be, and the attack sequences are fast and violent. There's a mid-film setpiece in a hospital that's just fantastic. And despite being absolutely undeniably about the most extreme possible version of gaslighting, thankfully nobody ever uses the word gaslighting.