During a winter getaway at an isolated cabin, a self-destructive young woman becomes convinced that her best friend is stealing her blood. Horror,Thriller It's not a horror movie, it's a psychological movie. Get that out of the way first. A lot of reviewers are upset that there weren't zombies or vampires. And some seem upset about "diversity" and "women films," but we know where the come from so... yeah. Both women in the cast are damaged in various ways, but one is definitely more damaged than the other, and the slow unfolding lets you know who that is (although I suppose there is some ambiguity if you would like to keep wondering at the end). I thought they did a great job of evolving the characters, dropping casually into the dialog little clues that explain the backstories and motivations of the characters. Over all it is sad, not horrifying. It's not the greatest film ever made, but having spent a lot of Covid watching some truly terrible films, I thought this one was well worth the time spent watching.