In this hauntingly twisted tale, an author reconnects with an old boarding school friend, forcing her to reckon with their shared past and the imaginary creature she thought they left behind.

Touch a line, you break your spine.

Stacey is the dusty air, the cracked soil, the drought. To thirteen-year-old Bethany Sloane, she's everything.

Abandoned by her mother at a remote African boarding school, Bethany will do anything to stay in Stacey's good graces. And that means learning the rules of each twisted game.

Touch a crack, you break your back.

Years later, Bethany is a bestselling author. Disabled now, she can't remember what happened back in the bush. But there's no mistaking Stacey Preston's name in her inbox.

Glassy, glassy, cut my arsey.

That email brings Bethany's childhood rushing back. The Glass Man was just a story the Thorns invented, a game of wits. But every game has its rules--and consequences for breaking them. To stay alive this round, Bethany needs to play right into Stacey's hands.

Dark and disturbing, The Thorns explores the horrifying world of adolescent abuse, controlling friendships, and blinding obsession.