The Dark Portal was published by Macdonald Young Books in 1989, the first volume of the Deptford Mice trilogy. Jarvis’s debut immediately distinguished itself from the cozy tradition of British animal fantasy (Beatrix Potter, Kenneth Grahame, Brian Jacques) by its willingness to be genuinely frightening — to portray evil as real, powerful, and capable of destroying the innocent.
The mice of Deptford live in a community beneath a disused house, unaware that beneath them — in the sewers — lies the domain of Jupiter, an ancient and terrible rat-god whose malice extends beyond the merely physical into the supernatural. When Albert Brown (a timid mouse) disappears into the sewers, his daughter Audrey and her friends descend to rescue him — and encounter a world of rat-worship, dark magic, sacrifice, and a malevolence that threatens not just their community but reality itself.
Jarvis draws on genuine folk horror (the Green Mouse — a nature spirit — owes something to Green Man mythology; Jupiter’s cult has the structure of real occultism) and Christian symbolism (the mice’s courage against supernatural evil has a theological dimension) without being allegorical. The world is its own: darker than Redwall, stranger than The Wind in the Willows, and willing to kill beloved characters in ways that genuinely shock young readers.
The trilogy’s unusual intensity made it a cult classic — less commercially successful than Brian Jacques but more highly regarded by readers who encountered it.
Collecting The Dark Portal
First edition (Macdonald Young Books, London, 1989): Cloth binding, dust jacket.
Market values:
- First UK edition in dust jacket: $30–$80
- Complete Deptford Mice trilogy (firsts): $60–$150