Sam Thompson’s review published on Letterboxd:
Branden Cronenberg takes some cues and inspiration from his Pops as he creates a visceral, visually effective and gory story boasting a fascinating premise.
There really is a lot to like here. It's cinematography, direction and peformances are all really solid. Scenes where a character is controlling another is displayed really well with vivid editing and lighting. My favourite part of the film is the ambiguity of who is actually in control. Is the person we follow actually controlling himself and making these decisions? or are these actions being made by the exterior possessing agent.
Unfortunately for me personally, this film is style over substance. It doesn't delve into its premise deep enough with any tenacity or bite. They manage to stretch the premise to its limits without extracting something greater. Slow pacing is not a bad thing but here it felt needlessly sluggish. I didn't care for any of the characters and the repercussions of their actions.
Possessor whilst offering a lot to admire is basically a Black Mirror episode stretched for a 100 minutes. Which isn't an awful thing but for me it could've been 60-80 minutes and said the thing.
I mean if it was early in my directing career, I'd be proud I made a decent competent film like this but at the end of the day it's not as special or memorable as it could've been.