One of Us Is Back by Karen M. McManus

One of Us Is Back by Karen M. McManus -- 368 pages

Ever since Simon died in detention, life hasn't been easy for the Bayview Crew. First the Bayview Four had to prove they weren't killers. Then a new generation had to outwit a vengeful copycat. Now, it's beginning again.

At first the mysterious billboard seems like a bad joke: Time for a new game, Bayview. But when a member of the crew disappears, it's clear this 'game' just got serious - and no one understands the rules. Everyone's a target. And now that someone unexpected has returned to Bayview, things are starting to get deadly. 

Simon was right about secrets - they all come out, eventually. And Bayview has a lot it's still hiding.