Dr. Alex Cross is on his last police duty to track down an assassin called Picasso, who's been torturing and killing rich businessmen in Detroit. Soon when the mission gets personal, Cross is pushed to the edge of his moral and psychological limits to end this once and for all.

In an innocent heartland city, five are shot dead by an expert sniper. The police quickly identify and arrest the culprit, and build a slam-dunk case. But instead of confessing, the accused man writes the words, "Get Jack Reacher." Reacher himself sees the news report and turns up in the city. The defense is immensely relieved, but Reacher has come to bury the guy. Shocked at the accused's request, Reacher sets out to confirm for himself the absolute certainty of the man's guilt, but comes up...