Julia 'Jules' Farentino knows that her teenaged half-sister, Shaylee, has been having problems lately. But when she learns of her mother's plan to send Shay to an elite boarding school in southern Oregon, she's skeptical. The Academy is a remote, secluded institution with a reputation for turning wayward kids around. With its emphasis on structure, discipline, and building self-reliance, it claims to succeed where other schools fail. But one of its students went missing six months ago and has never surfaced. And the further Jules digs into the school's history, the more concerned she becomes.

On impulse, Jules applies for a teaching job at the Academy, and once there, her suspicions grow. Another student disappears, and two more commit suicide in strange circumstances - or were they murdered? Something sinister is lurking beneath the Academy's serene façade. And uncovering the truth will mean confronting a powerful force of evil that's willing to kill, again and again.

Gripping, fast-paced, and with a shocking twist that will leave listeners gaping, Without Mercy is Lisa Jackson at her brilliant best.