Season 1: Reacher arrives in Margrave, GA, and is arrested for murder. He discovers the victim is his estranged brother, Joe Reacher, a Secret Service/Treasury agent investigating counterfeit money. The town's benefactor, Kliner Sr., Mayor Grover Teale, and dirty cops are running a massive laundering operation—bleaching $1 bills with cow feed chemicals to reprint them as fake $100s for Venezuelan cartels. The Major Twist: Kliner Sr. was not the main killer; his psychopathic son, KJ, killed Kliner Sr., Joe Reacher, and others. FBI Agent Picard was also secretly corrupt. Reacher, Finlay, and Roscoe burn down the facility, kill KJ and Teale, and free Margrave.
Season 2: Members of Reacher's former 110th MP unit are dropped out of helicopters. The team investigates New Age Defense contractor Shane Langston, who is illegally selling 'Little Wing' missile guidance chips to terrorist broker A.M.. The Major Twist: Missing 110th teammate Tony Swan was NOT a traitor; he discovered Langston's plot, was murdered, and Langston kept Swan's severed eyes and fingers to bypass biometric access locks. After Detective Russo dies saving a child, Reacher and the 110th infiltrate Langston's chopper, throw Langston out into the night air, execute A.M., and distribute the cartel money to victims' families.
Season 3: Reacher goes undercover for the DEA inside Zachary Beck's luxury estate to bring down Xavier Quinn—the sadistic criminal who murdered Reacher's former MP subordinate Dominique Kohl years prior. The Major Twist: Beck is not the criminal mastermind, but a coerced puppet; Quinn kidnapped Beck's daughter Teresa to force Beck's compliance. Reacher survives a fight with 7'2" bodyguard Paulie, kills him, rescues Teresa alongside Agent Duffy and Neagley, and personally executes Quinn, resolving his long-standing trauma.