DEVIL'S LABYRINTH by John Saul - FIRST EDITION BOOK

Still suffering from the loss of his father, fifteen-year-old Ryan McIntyre is having difficulties in the Boston public school he attends. His mother Terri's boyfriend recommends Ryan be enrolled at St. Ignatius Catholic School, which has an excellent reputation for dealing with troubled teenagers. Terri reluctantly agrees.

Newly arrived at St. Ignatius is Father Sebastian, an exorcist recently assigned to test the efficacy of exorcism on some of the school's most troubled teens.

Under his leadership, the ritual seems to be effective - so much so that the Vatican grows interested - and Ryan is selected to assist him in his work. But soon it becomes clear to Ryan that Father Sebastian is up to much more than the Church knows, and that Ryan and his friends are in grave peril. But by then it's nearly too late: Ryan has fallen under Father Sebastian's spell. And to break the spell, Ryan will need to stare down the devil himself - and live to tell about it.