The Deptford Mice live a comfortable life in the skirting boards of an abandoned London house, with no humans or cats to disturb them. But something is lurking deep beneath the city. Something that threatens to destroy their cosy existence for good. In the dank sewers under the house lives a mysterious being, worshipped by a horde of bloodthirsty rats who cower in its presence... When a mouse called Albert Brown unwisely ventures down into the sewers one day, he uncovers a terrifying plot to awaken an ancient evil. Soon Albert's family and friends find themselves in a desperate struggle for their lives. Summoning all their courage, they must confront treacherous enemies and foul sorcery in a battle to save London and the world from eternal darkness.

"So wonderfully dark and magical. An absolute classic" - Phil Hickes, author of The Haunting of Aveline Jones

"Spooky and enthralling animal fantasy just right for Redwall fans... [Jarvis] provides counterpoint to the heart-racing adventure with scenes of haunting beauty" - Publishers Weekly, starred review

"A tale of horror and valor, good and evil, leavened with humor" - Booklist

"Entertaining and genuinely frightening" - Kliatt

"A grand-scale epic... Filled with high drama, suspense, and some genuine terror" - Lloyd Alexander, author of The Chronicles of Prydain

"Jarvis is a great writer, in command of his intricate plotting" - Scottish Sunday Herald

"Robin Jarvis knows how to win readers over and hold them in a tight grip" - Young Post

"Power-hungry rats, nature-loving mice, mystical bats... In The Dark Portal Robin Jarvis delights the reader with not just one, but three unforgettable animal societies... He offers a strikingly original, totally absorbing fantasy world" - Philip Glassman, founder of the Books of Wonder shop

"The perfect stories for dark, cosy evenings. A once read, never forgotten series" - Phil Hickes, author of The Haunting of Aveline Jones