Without Mercy by Lisa Jackson
At first, it sounds like the answer to a parent's prayers: an elite boarding school in the Oregon mountains where wayward kids turn their lives around. But behind the idyllic veneer lie disturbing rumors of missing students and questionable treatments.
"A NAIL-BITING ROLLER-COASTER RIDE." --Library Journal
Jules Farentino knows her half-sister, Shaylee, has been going off the rails lately. She's just not sure Blue Rock Academy is the answer. Accepting a teaching position there lets Jules keep an eye on Shay, but also confirms her fears. One student is found hanged, another near death. Something sinister is at hand--and Jules may already be too late to stop it.