This was a slow one but if you keep with it the ending is a good payoff. 

After a fateful night when they were younger, twins Lenora and Cassie have relied on each other. Currently living in a cabin on a secluded campground they live a pretty peaceful existence; at least from the outside world. After the passing of the owner of their campground a new woman has bought it and moved in. Then a couple and their teenage daughter come to stay for the weekend and all three of the cabins are occupied. When the teen goes missing and is soon found dead the twins start to suspect everyone that was there at the campground. They even start to suspect that each other knows more than they are sharing. Their peaceful cabin is now riddled with danger and they must figure out what's going on before one or both of them are next. 

This book is very slow. Luckily the writing is good and it makes reading it enjoyable. I found both sisters to be frustrating but overall good characters and learning about them made reading it enjoyable as well. However, about halfway through I became frustrated. The story is told from the perspective of both Cassie and Lenora and also a third perspective that isn't revealed until the end. For the first half of the book I was collecting more and more questions and was not getting any answers which is why I was getting frustrated. Luckily I kept with it and by the last quarter of the book I got most of the questions I needed answers to. And the answers I didn't get weren't that pressing to the story. The twist was exciting and made sense which also made the payoff worth it. 

I also really enjoyed the narrator which also made listening to the book easier. She really made each character come to life; even the characters you weren't sure who they were yet. 

I recommend but I'd go into this knowing that it's a slow build.