Suicide bombers are easy to spot. They give out all kinds of tell-tale signs. Mostly because they're nervous. By definition they're all first-timers. Riding the subway in New York at two o'clock in the morning, Reacher knows the twelve giveaway signs to look out for. Watching one of his fellow-passengers, he becomes sharply aware: one by one, she ticks off every bulletpoint on his list. Grand Central Station is approaching - will Jack act and save lives - including his own?