Note: I received this book from the author/publisher in exchange for an honest review. 
 Lately I've been really enjoying psychological thrillers (The Girl on the Train, Gone Girl, etc.) so I was very excited to read this. And I was very intrigued by the plot- Edie is sure that an old friend from her past is stalking her and her new baby daughter. The story is told in two alternating points of view- the present from Edie's perspective, and the past from Heather's. There were plenty of twists and turns and I never really knew who to trust, which is really a part of any good thriller. The horrible past events are teased throughout the book and you don't get the full truth until the last few pages. 
 I mostly enjoyed this story and had a good time reading it. I thought the writing style was a little awkward or simple at times and found myself bored with some sections. It took me a while to really get into this story because the first few chapters are not written in a gripping manner and read more like a book aimed at a younger audience. The author does eventually get into the swing of things and the writing improves, and I was quickly hooked and did not want to put the book down. I wasn't thrilled with the ending and would have liked a bit more. Overall, this is a fun read and definitely a good addition to the psychological thriller genre. There were some parts that could have been enhanced or worked on, but for the most part this will make for a nice summer read.