Well don't I feel stupid. No where in the dust cover description did it say that this was an ongoing series about these detectives. So I picked it up and read it as a stand alone series. And while technically it is, I definitely would have read them in order to get to know the characters more in depth first. 
 If I'm being honest, I read Find Her only a few months ago and I'm fairly certain it had at least 1-2 of the characters in it and I didn't put it together until the acknowledgments at the end. 
 Right Behind You was an AMAZING story. I can't say that the entire plot twist was a surprise, a good portion of it I guessed fairly early on, however there were a few twists in the last chapter that were a total surprise. 
 Police drama, murder mystery, and angsty teenagers all wrapped into one story is either going to be amazing or awful and it was definitely the first.