Eh. It felt like more of the same from the past two books. People wanted to get to the kids again, so they switched locations a few times... 
 I eventually started skimming when Simon almost walked in on (view spoiler)[Derek and Chloe kissing for what seemed like the 50th time. Maybe the book was too middle grade for my tastes after reading so many adult and older YA books, but it got old pretty quickly. If they're not supposed to kiss until the end, then just let them wait it out. (hide spoiler)] 
 Maybe I'm just one of the rare ones that didn't love this series, but I just felt like this was a repeat of the first two books, other than a few details being wrapped up.