This is very much like Pretty Little Liars which is one of the reasons I enjoyed it so much. It's more than just your typical crime and thriller. It plays tricks with you. You want to find out who the mysterious person is as much as the characters do. Sara helps you create your own endings and your own reasons. I found that it was nice and fast paced, without missing out too many events. It didn't slack or lag behind at any point and kept me hooked the whole time. I would have finished it in a night if sleep wasn't necessary! I especially like how each of the characters had been through something in the past that related to the current events. Either relating to the person committing the crimes or just that it was similar. I will definitely be seeking out more titles by Sara.