I listened to this one on Audible. I definitely recommend the audiobook. The narrator is great! Elise is our main character, but the story is about her friendship with Julie. Julie went missing, and 2 years to the day, she shows up. She doesn't remember where she's been or what happened. Her friends don't believe her, and they try to act normal about how weird Julie is acting.
Elise's point of view is all over the place. Her side stories and internal monolog make her feel real and relatable.  
I enjoyed this one even if I found it predictable.