Reacher and Neagley investigate the murder of a member of 110th, a group of Special investigators assembled by Reacher, only to realize the whole unit may be at risk.

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