Reacher meets up with Neagley in Brooklyn after she informs him that Franz, a member of the 110th, a group of Special Investigators assembled by Reacher, has been murdered. Reacher and Neagley decide to investigate the case and eventually meet up with former 110th cohort David O’Donnell. As the case progresses, they soon realize members of the 110th are being hunted.

Reacher and the team bring another 110th member, Karla Dixon, onto the case and travel to Atlantic City in search of Sanchez and Orozco, two more of their missing military comrades. But Atlantic City turns out to be a city where our heroes wind up gambling with their lives as thugs are sent to take them out for good.

After learning some devastating news, Reacher returns to New York and forges an uneasy alliance with NYPD Detective Russo. Meanwhile, Neagley and Dixon follow up on their only lead. An unauthorized visit to New Age Industries causes our team to suspect one of their own.

Reacher, Neagley, O’Donnell and Dixon discover that before his disappearance, fellow 110th member Tony Swan was exchanging cryptic emails about a federal contract called Little Wing. The team travels to Boston to ambush a senator’s aide with close ties to the project. But they wind up being ambushed themselves by a group looking to kill them.

Neagley and Dixon discover shocking information about an old friend in Denver while Reacher and O’Donnell learn more about the nefarious and mysterious A.M..

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

Laid low by the tragic death of an ally, Reacher and the 110th regroup, but have no time to mourn. Reacher and his team are attacked and brutalized, resulting in Reacher having to put together a desperate plan that has to work or the everyone in the 110th, including himself, will die.

Reacher finally comes face-to-face with Langston as we learn the brutal truth about Swan. An all-out war between our heroes and Langston’s culminates in a violent climax where blood is shed and bodies fall – some from the sky.