Maika Monroe brings it and has you hanging on every twitch and avoidant behaviour. She is excellent. Cage is truly (mostly) unsettling and only very briefly overstays his welcome. 

Almost everything about this thing is just a little… off. And that makes for a compelling watch. Scanning every frame for what may or may not be there. Listening for any subtle change to the soundscape. 

I clocked it a bit earlier than I expected and kept waiting for a different deception to emerge. Where this thing struggles is in having to go hard on the exposition to unravel some of its more peculiar beats, which I think took a lot of wind out of the sails.