Tubi Originals can be hit or miss, and while this really isn't a big hit, neither is it a stinker. The scenery in the Scottish Highlands and other camera work is actually quite good. At the beginning of the movie, as they are driving to the Inn, a woman is hitchhiking, and they pass her by, saying one can never be sure. In an evening get together at the Inn, one of the characters acts like a jerk, so one watches to see if he will be the first killed. Rhona's father left her a cabin in the woods, and they set out on a hike, and along comes Carla. But no emergency plan, as they didn't think one was important. It is clear the group are not hikers, but Carla seems to know the area, so she leads. So off they go, but how many will survive? In flashbacks, Carla is former soldier, likely in Afghanistan, and she has a 'unique' way of handling people who are in pain or suffering. Turns out she is psychotic and also a deserter. What is her motive for killing is not explained, but who will survive? It becomes a tense cat-and-mouse game. Rhona was there as a child, but that was a long time ago, so she isn't sure about the area. There are a couple of disconnects. For a short hike, Carla has a length of climbing rope and climbing gear. And the cabin once reached, seems out of place for how far it is from everything. It is not a simple back country shack. But the group of young people seems believable even if one wonders how they got together with so many conflicts present. The story progresses without a lot of side trips. It is a decent movie redeemed by the scenery.