The ghostly spirit of Jupiter has returned, more terrifying than before.

Bent on revenge, he smothers the world in an eternal winter of snow and ice.

The Deptford Mice are worried: the mystical bats have fled from the attic, and a new rat army is gathering strength.

With food short and no sign of spring, the mice know there's a desperate struggle ahead.

Who knows how many will survive ... and at what cost. The Deptford Mices' adventure concludes in the final book of this compelling and original trilogy.