When darkness falls on Gloam Island, a grieving family discovers that their charming new babysitter harbours a sinister truth. Gwen sees what others cannot—the hunger behind Esme Laverne's beautiful facade—and realises she alone must confront the supernatural threat lurking within their crumbling home. As the babysitter's power intensifies, Gwen faces an impossible choice: surrender to terror or find courage in her deepest fears. This spine-tingling tale of family, courage, and the monsters we must face explores what it truly means to be brave. A Sunday Times Children's Book of the Week that Jonathan Stroud calls "thrillingly scary and impossible to put down."