Five YA thrillers with a supernatural twist

S. Jae-Jones is the author of Wintersong. At the BN Teen blog she tagged five YA thrillers with a supernatural twist, [spoiler alert] including:
We Were Liars, by E. Lockhart

Cadence is suffering memory gaps and strange physical symptoms of unknown origin, and it all has to do with what happened the summer she can’t recall. Now, two years later, she’s returning to the private island owned by