Years before, when he was an MP, Reacher’s colleague was brutally tortured, raped and murdered by a person known as Quinn, who was then a CIA double agent. Reacher lost track of him, but he suddenly resurfaced in a DEA investigation. Reacher teams up with the DEA folks to and infiltrates the operation of a Zachary Beck, in the hope of getting closer to kingpin Quinn.
A large part of the book details the elaborate ruse by which Reacher enters the service of Beck, and how he manages to get in and out of the fortress like mansion where the Becks live. Reacher pretends to save Beck’s son from a kidnapping attempt, and then becomes Beck hired gun and bodyguard. He also faces off with Beck’s hulking bodyguard Paulie, eventually leading to a massive showdown with DEA, ATF and Quinn’s folks, all happening at the mansion.
Typical Reacher book; he draws upon some events which happened in his time as MP, and using skills inherited from that time, brings down a massive crime syndicate. One key difference here was that he didn’t rope in his trusted lieutenants from the MP squad, otherwise, pretty standard potboiler. Quick read, marginally enjoyable, and eminently forgettable.