'Wonderfully dark and magical. An absolute classic' Phil Hickes, author of The Haunting of Aveline Jones The spine-chilling children's fantasy classic, from the author of The Whitby Witches Featuring new illustrations The Deptford Mice live a cosy life in the skirting boards of an abandoned London house, with no humans or cats to disturb them. But something lurks in the dank sewers beneath the city - a mysterious, powerful being, worshipped by a horde of bloodthirsty rats who cower in its presence... When a brave mouse ventures down into the sewers, he uncovers a terrifying plot to awaken an ancient evil. Soon his family and friends must summon all their courage to confront treacherous enemies and foul sorcery in a battle to save London and the world from eternal darkness.