Got this title at Dollar Tree and - despite not being sure of the genre - I thought I'd give it a chance. So, the cover seems to suggest horror, but it's not. That's all right, but I was expecting a bit more tension based on the cover and the description.
What it does have going for it, however, is atmosphere and solid acting. I like Emilia Jones from "Locke and Key," and George MacKay from "Captain Fantastic." The other cast was also good, so no complaints at all in the acting department.
The setting (northern England) was also cool. Great use of minimal space without it feeling like they were just recycling locations. How little things changed actually complemented the atmosphere, giving the impression that very little changes there.
The story, however, is lacking a bit for me. I'll try not to add spoilers, but the twists are not so much transparent as they are trite and - worse - don't really fit with the POV. That is: there's really no point in having a scene over the shoulder of someone who isn't actually there. It becomes disingenuous and seems only there to maintain the situational irony (where the viewer isn't supposed to have put things together yet). This also greatly lowers the stakes, which are supposed to go up, not down (generally speaking).
Thus, I don't know I'd ever watch it again, but I definitely don't feel I wasted my time on it, either. If someone likes the chiller, more atmospheric sort of film, this will likely work for you. If you're looking for much else, I'd probably pass.