Tasked with rescuing the daughter of one of America's richest families from the grips of a sinister cult, Nick Stone expects his latest mission to be quick and straightforward.
Travelling to the frozen depths of the Norway/Russia border, the dividing line between NATO and the Kremlin's armed forces, it seems all he and his team need do is abduct the woman and deliver her home alive.
But there are deadly complications - not least that Nick soon discovers himself at the heart of a chilling cyber conspiracy that threatens war with Russia and the very existence of the Western alliance . . . and that following a shocking diagnosis his body is failing him fast, and any day now he will have to ask himself the ultimate question . . .