England, 1930. Journalist Nell Fagan is on the trail of a bizarre mystery: in 1606, a man vanished from a locked gatehouse in Blackstone Fell, a remote Yorkshire village.

Three hundred years later, it happened again. Days after confiding in sleuth Rachel Savernake, Nell herself disappears. In search for answers, and determined to bring an end to the disappearances, Rachel travels to the lonely Yorkshire village, with its eerie moor and sinister tower.

But Rachel must be careful – with all of these people going missing, there’s every chance she will be taken too... For anyone who loves a dazzling mystery, Blackstone Fell explores the shadowy borderlands between the spiritual and scientific, between sanity and madness, and between virtue and deadly sin.