After more of his friends fall victim, Reacher forges an uneasy alliance with a dogged detective, and their only clue in the case leads the 110th to a troubling discovery.

Reacher and his team head to Boston to track down a political aide with insider knowledge of a top secret military-defense contract that may be the reason behind their friends' deaths.

As the mystery continues to unfold, Reacher and his team set a trap to even the score.

As the team close in on Langston, two members of the 110th face danger, compelling Reacher to devise a dangerous plan to rescue them.