When Ludlow Fitch's parents cruelly betray him, he steals away on the back of a carriage and leaves behind the stinking City. He arrives in the dead of night at a remote village, where he crosses paths with the tall and limping figure of Joe Zabbidou - a pawnbroker with a difference. For Joe trades secrets, not goods, for cash.

Employed as Joe's assistant, Ludlow records the villagers' fiendish confessions in an ancient leather-bound volume: The Black Book of Secrets. There's the gravedigger who has been resurrecting bodies; the butcher who made a mouse-meat pie for his bullying father, with fatal consequences; the wizened bookseller who went to murderous lengths to get her hands on a priceless tome.

Ludlow longs to trust his mysterious master, but he senses Joe has much to hide. But then Ludlow Fitch has his own, very dark, secrets . . .