Armentrout has done it again. Proven she can tackle a completely different genre (contemporary mystery) and still manage to make it an addicting, mysterious, head scratch inducing, romantic, and favorite read. I devoured Don't Look Back in a day because I read it everywhere. I couldn't guess the mystery and I thought the main protagonist has a really good voice. 
 So Samantha finds herself walking in the middle of the road, the cops stop her, identify her and she finds out she has been missing for some time.. and not just her, but also her best friend. Samantha doesn't remember a single thing a couple of weeks before her missing period as well as her missing period. We know nothing, and I just found the way the mystery was introduced to be so addicting. So her best friend is missing and everyone has hope once again that they might find her. However, Samantha discovers some weird things about her old self, for one she's the meanest of the mean girls, treats her family like crap, and parties hard, the cliched rich kid wrecking their car because she was drinking, and right down to having fake best friends. So yea, if you're not intrigued now, maybe the next part will make you want to pick it up? 
 Enter Carson Ortiz, Samantha's brother's friend and the help's son. Of course she used to treat him like crap, including her parents. As soon as Samantha sees him, she gets that feeling when you see a guy and you immediately crush on him? He is of course wary of her because of how she treated him. Still, Samantha starts to become super aware of Carson even with her constant reminding that she already has a boyfriend that she's been with for several years. I just thought the romance was deliciously done and I really really love Carson. He is filed under "Guys that allow me to have hope for our male species". He was a friend she really needed and was very honest and truthful and was always there for her even when no one else believed her. Their relationship was one I was rooting for from the start. Also, I liked Samantha's brother and how protective he was of his sister. I feel there are a ton of secondary characters worth mentioning but it'll end up being too long of a review. This proves how talented JLA is because I read this book over a month ago but I still remember everything. 
 The mystery aspect of the novel was also magnificently written. I honestly couldn't guess who the perpetrator was at all. It came as such a big shock when it was revealed. I had a lot of theories and I am usually good at predicting them but for this one I couldn't for the life of me figure it out. I really really recommend this novel so hard for contemporary mystery fans.. even just contemporary fans or just YA fans in general. I was blown away by Don't Look Back and I am really excited to read any new book she writes in this genre.