Last Seen Leaving by Caleb Roehrig

Summary from Goodreads:

Flynn’s girlfriend has disappeared. How can he uncover her secrets without revealing his own?
Flynn’s girlfriend, January, is missing. The cops are asking questions he can’t answer, and her friends are telling stories that don’t add up. All eyes are on Flynn—as January’s boyfriend, he must know something.
But Flynn has a secret of his own. And as he struggles to uncover the truth about January’s disappearance, he must also face the truth about himself.

Reviewed from a copy received from Netgalley.

Confession:

This was a really gripping mystery.  Once I got into it I had a hard time putting it down.  Flynn is a great character with a lot of conflict, but I loved how he was so loyal to January and was driven to find out what happened to her no matter the cost.  There is a lot of flashbacks to not only the last time Flynn saw January, but also into scenes that helped explain their relationship and some that maybe helped to explain what happened.  I really like the juxtaposition between what Flynn related about January and their relationship to what others were telling him about January.  Even though we learn Flynn’s secret early on in the book, how the secret relates to January’s disappearance is not easily seen until the end.  I also figured out most of what had happened to January before it was revealed, but there were some twists that surprised me. All in all a good murder mystery for teens with interesting characters and a plot that will keep you up at night.