Winter returns to face the most feared hitman of all time, the Guardsman. 

Winter has put the world of organised crime into crisis by unmasking its boss, Alek Konstantin. Hunted and permanently on the run, he has been caught on camera in Mexico, Virginia and Marseille. Retracing his steps, Winter attempts to uncover his motives and bring the world's most wanted man out of hiding using the tracker he embedded in her wrist. But things aren't quite that simple. After finding Lucy and watching her die a sickening death, Winter's desire to bring down the legendary Guardsman overrides her orders. Knowing Firestorm’s top contract killer is experimenting on victims, she takes a contract out on herself to catch him.  

Once again disguised as her alter ego, Snow White, Winter follows the Guardsman to Moscow expecting to spring the trap. However, things aren't quite what they seem. Who is the Guardsman and why does he know everything about Winter? With the reality of the situation unravelling as the world’s leaders assemble in London, just how much has Winter underestimated her opponent and is the realisation all too late? 

Winter faces her biggest challenge yet in this dark commentary on our surveillance society.