The Purgatorium3 books in series
The Purgatorium, Volume 1 Publisher's Summary
Seventeen-year-old Daphne Janus travels with her best friend to an island off the coast of California where she thinks she's trying out a new resort before its grand opening. Soon she's told that her parents have sent her there to undergo a new experimental therapy for suicidal people designed to terrify patients into fighting for their lives. Daphne doesn't know what to believe; she just wants off the island.