This was pretty good. I thought it was really well put together and it did have some surprises in there though I did predict a few of them.
I think the premise of this was a really good idea. It was a new direction that I haven't seen before. A high school student wanting to do a project on an old crime case that she believes caught the wrong killer. It was intriguing and different and I like how it was portrayed.
I did find Pip's motivations a little lacking though. I wasn't really sure why she was so interested in this case in the first place. And I know she said that she found some inconsistencies and that's why she believed Sal could be innocent, but I don't remember her ever really describing those inconsistencies. It just seems odd for how strongly she felt about it.
The mystery itself kept me interested quite a bit throughout though. I started realizing it was very similar to Pretty Little Liars. The murder victim was pretty much exactly like Allison - beautiful and popular because of it, but a terrible bully who was mean to everyone including her friends. And everyone's secrets coming out and the threats that Pip got were also similar to PLL.
But this book didn't have as much of the absolute craziness and unpredictability that PLL had. In fact, I did end up predicting some of the twists throughout the book.

By the time I had read half way through, I had guessed that everyone at that party had been lying about when Sal left and that Mr. Harding was the secret older man Andie had been seeing. My guess was either that Mr. Harding had killed her or kidnapped her or that Naomi had.

I was happy when I realized that I was only half right by the end and it still managed to surprise me with the real killer. It makes me wonder if the author had meant to make it that way or not.
Anyway, this book was well thought out and I like Pip and Ravi. Watching them both grow and get to know each other was definitely a highlight of the novel. I really liked when

Pip tried to get him to give up the case but he came back because he realized that the killer had probably been the one to kill her dog and that was the only reason why she was giving up.

It really showed how much he had come to know her as a person even besides the case. He knew she would never give up on finding the answers unless she was forced to. I thought it was a good little detail to show how their relationship had progressed since their meeting.
Overall this was a good book but it's not my typical favorite genre and I'm not sure if I really need to continue with the rest of the series. Maybe I will if I need to find something else to read one day.