The spooky sequel to Deep Dark, the Times Children's Book of the Week from enchanting storyteller Zohra Nabi comes another Cassia Thorne Mystery – this is Enola Holmes with a supernatural twist! Cassia Thorne uncovered a conspiracy in the deep dark underbelly of London involving a mythical beast, but has been whisked away by her uncle to Ravening Hall, a bleak boarding school on the moors of Lancashire. Far away from everything she has known, Cassia struggles to find a place amongst the girls of the school – torn between fitting in with the perfect prefects and the rebellious and wild Martha Torrent. And something sinister is happening at the school. At night there is a strange presence in Cassia's room, growing stronger with each day. She spies older girls wandering out onto the moors at night. And the local children are terrified of a child-eating witch that haunts Pendle Hill. Suspecting another supernatural mystery, Cassia begins to investigate. Are the stories about the witches of Pendle Hill true? And what do they want with the girls of Ravening Hall?