Trigger

Cassandra has been shot by a serial killer, moments after four of her classmates, deep in the forest outside her town. Waking up, three years erased from her memory, she attempts to get her life back on track. The only person who seems to treat her normally, not like the incapacitated vegetable everyone seems to think she is, is Tom. Tom, the strange boy who no one at school seems to talk to. Tom, who seems to know a lot more about what happened that night than Cass could've ever guessed. As Cass's "triggers" start working more and more, and she remembers more and more, Cass realizes that Tom isn't someone you want to be alone with.

But no one gets that lucky twice.