'You know what it's like. Dark at teatime and sleeping indoors: nothing ever happens in the winter holidays." Or so Nancy thinks.
Then the lake ices over completely and the Swallows and Amazons, along with Dick and Dorothea -- 'the D's' -- plan a race to find the North Pole.
How will they reach it if they can't sail? By sledges of course! But when a blizzard blows up and there is a mix up about signals, the D's disappear into the Arctic night.
Disaster looms. Can the Swallows and Amazons save their friends?
- Format: Hardback
- Pages: 368 pages, 1 Illustrations, unspecified
- Publisher: Random House Children's Publishers UK
- Publication Date: 27/09/1984
- Category: Adventure
- ISBN: 9780224606349