This isn't a groundbreaking sci-fi thriller but I have to admit I enjoyed the first 2/3 of it. It's a low-budget, slow-burner production but definitely worth watching if you lower your expectations. As we all know by now, hiking is always a bad idea and unfortunately the first scene of the movie gives it away. Not completely, but you sort of know something is coming. Although there are some surprisingly good twists, the suspense dropped significantly when the "mystery" was revealed. The acting is hard to comment on as the script doesn't demand much from the actors, but all in all, a good movie to watch on a rainy Sunday night.

Interesting concept that is kept mysterious in previews, but quickly spoils the overall concept in the first 10 minutes (or suggests it loudly). Still, there is a mild edge as we try to understand what is happening. After things are clear on the plot, this turns into a mind game psychological thriller. But it lacks enough tension to be a thriller. Maika Moore and Jake Lacy play off each other well, making their couple in tension highly believable. But, the movie overall boils down to a very small point, and this was underwhelming for me. The movie is less mysterious when watching than what the previews suggest leaving a horror and thriller fan disappointed.

I don't know why Horror's not included in the "Genres" list; I would call this more horror with sci-fi elements than the other way around.

Trying to think of what other films of which this one reminded me, and the closest I could come up with was Under the Skin. While not as creepy and much more overtly explained than that 2013 Scarlett Johansson film, I found definite similarities. To elaborate more on this would be bordering even more on spoiler territory; suffice to say that this film's title is quite the double entendre.

I'm liking Maika Monroe more each time I see her, and she does not disappoint here.

As a horror enthusiast, I find the present rating of 5.7 for this film far lower than it merits. I found it far superior to the recent Hellraiser reboot and, unlike that film, look forward to watching this one again.