The book is by a Canadian author, Shari Lapena, although it was not set in Canada (at least not that I could tell). The setting was kind of generic.
It is a mystery type book, written like The Girl on the Train or Gone Girl, you know half of the story but you don't get the whole thing until the end. I thought it was okay but I wasn't a big fan. I like a mystery book and novel where if you're paying attention you're able to figure it out by yourself rather than just being told what has happened. This was a mystery but there were no clues that could lead me to solving it, and a lot of red herrings.
Another thing I did not like about the book was the title. I don't want to give too much away, but it was not what I expected. I knew absolutely nothing about the book when I started reading it, which I prefer, and I was expecting something else. I know this is vague, but I think it's better to read it with no prior knowledge of the plot.
Despite its shortcomings, I did want to keep reading the whole time and I finished it fairly quickly. I sympathized with the characters, or at least one character. I really wanted to know what would happen and I thought it could have gone any number of ways.
If you want an easy read, pick it up, but I wouldn't put it in the same category as Gone Girl (that book I really could not put down).