Meet Ruslan Akulov. In the shadowy world of assassins for hire he is known as 'Wolf Six'. A Ukrainian raised in Moscow conscripted into Russia's most covert Special Forces unit 'The Werewolves' Akulov is full of loathing for the country that built and then broke him. The only rules he follows now are his own. Unable to shake the guilt of his past Akulov has made it his business to seek out those who prey upon the innocent. The name Wolf Six is legendary - whispered by those who know it with fear. But when Akulov accidentally thwarts the armed robbery of a Chicago Bank he pits himself against both the Russian Bratva and the CIA setting into motion a spiralling sequence of events which will bring his past back to haunt him and potentially turn his future to ashes. . . His mission of retribution takes him from Chicago to Kyiv to Havana and back into the US where Akulov must stop at nothing if he is to remain alive. No simple mission even for the world's deadliest assassin.