"Mark was the most dangerous killer-for-hire in the world. But after learning the hard way that his life's work made him more monster than man, he left all of that behind, and joined a twelve-step group for reformed killers. When Mark is viciously attacked by an unknown assailant, he is forced on the run. From New York to Singapore to London, he chases after clues while dodging attacks and trying to solve the puzzle of who's after him. All without...

-- Weapons of Opportunity, Nick Flynn returns in what could be his most dangerous mission yet.Former US Air Force officer Nick Flynn joined the clandestine Quartet Directorate to continue its long-standing mission: to act decisively against serious threats to the free world. And with the backing of Russia’s authoritarian president, no threat is more deadly than that of Pavel Voronin and his mercenary Raven Syndicate. Twice they have almost succeeded...