Richard Eusden is on his way to work in London one unremarkable winter morning when he is intercepted by his ex-wife, Gemma. She has sad news of his old friend, Marty Hewitson. Marty is dying, but needs a favour done for him at once.
Eusden reluctantly agrees and sets off on what should be a simple errand. But soon it turns into a race for life, his and Marty’s, across Belgium, Germany and Denmark and on into the Nordic heart of a mystery...