The Deptford Mice, book 1: The Dark Portal
Robin Jarvis2001

In the British tradition of Redwall comes this first novel of a trilogy that is sure to capture fans both young and old. In the sewers of Deptford, there lurks a dark presence that fills the tunnels with fear. The rats worship it in the blackness and name it 'Jupiter, Lord of All.' Into this twilight realm wanders a small and frightened mouse-the unwitting trigger of a chain of events that hurtles the Deptford mice into a world of heroic adventure and terror.