Reacher and Neagley make a final desperate attempt to save O’Donnell and Dixon, stop A.M. and avenge their friends’ murder.

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..

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.