Grainne's birth mother is coming to visit from America - a mum she has never seen before. As Grainne nervously waits for her arrival, her step-mother and two half-brothers decide to take a break. They are off to Finland for an adventure holiday, riding dog-sleds at a remote lodge. But when their mum is lost in the snowy wastes, the stage is set for a novel in two voices: a frantic story of seeking and finding which shrieks with nail-biting tension. A tale of snow and ice, and of courage and survival, this gripping story from world-class author Roddy Doyle will take your breath away.