One Of Us Is Next by Karen M. McManus #2

Welcome back to Bayview High . . .
It is a year after the action of One of Us Is Lying, and someone has started playing a game of Truth or Dare.
But this is no ordinary Truth or Dare. This game is lethal. Choosing the truth may reveal your darkest secrets, accepting the dare could be dangerous, even deadly.
The teenagers of Bayview must work together once again to find the culprit, before it's too late . . .