A schoolbus careens over a hillside road, trapping Hannah and a handful of survivors, a brewing virus, and no way to call for help. Former detective, Meg awakens in a cable car suspended far above a snowstorm with no memory of how she got there. Carter and his ragtag compatriots manage what they can to survive - mostly manufacturing vaccines against a deadly virus in exchange for life's essentials. The imminent dangers faced by Hannah, Meg, and Carter are each one part of the puzzle. Lurking in their shadows is an even greater threat - one that threatens to consume all of humanity.

Originally published: London : Michael Joseph, 2023.