Heart of Stone (2005)

Siblings Stina and Jonni are expecting a visit from their friend Skafti. But as soon as he steps onto the plane that is supposed to be taking him to the city, a mysterious chain of events is set in motion, and the kids will have to do everything they can to save themselves – and indeed the whole world – from imminent disaster. A breath-takingly exciting book with lively and colourful illustrations.

• Nominated for the Icelandic Bookseller’s Prize as the best children’s book of 2005