Reacher season 4

During a subway ride in Philadelphia, Jack Reacher questions Anna Merrick, believing her to be a suicide bomber, but ends up witnessing her suicide. Philadelphia detectives Tamara Green and Shaun Docherty interrogate Reacher and reveal that Anna worked for the government. Federal agents then ask him if Anna gave him anything, but he denies it. Two thugs demand a USB drive from Reacher they believe Anna gave him, but he fights them off. He then meets Anna's brother, Jacob, who tells him he believes Anna did not commit suicide willingly. Reacher uses a fake USB drive to obtain information, leading him to Lila Hoth, who has leukemia and discovered that Congressman John Sampson is her biological father. The USB drive was for Lila to blackmail Sampson into helping her. While investigating Sampson with Jacob, Reacher fights another attacker and kills him. After the attack, Reacher realizes Lila is in danger and goes to her hotel room, where he fights a man who manages to escape. Later, men in suits drug Reacher in an alley and take him away in a van.

Reacher wakes up in a cell with Jacob and Tamara and claims their kidnappers are CIA agents. When interrogated about the USB drive, he pretends to cooperate, then incapacitates them and frees Jacob and Tamara. They escape with help from journalist Russell Plum and discover they have been taken to Washington, D.C. Reacher decides to find Sampson, while Tamara and Jacob search Anna's house, where they find it ransacked and knock out an armed man. Reacher meets Sampson's wife, Elsbeth, who gives him Sampson's address. There, the same federal agents who questioned him in Philadelphia warn him to stop investigating. Tamara and Jacob tell Reacher that Anna's son, Ben, has disappeared. Back in Philadelphia, they find Colin at a fraternity house, who says Ben left with an OnlyFans model. They find the woman dead in her apartment and that Ben has been kidnapped. In Washington, Reacher confronts Sampson, who denies having an illegitimate child, and then locates Nolan Cahill, Sampson's chief of staff and a witness of Anna's suicide.

The trio returns to Plum's office to learn more about Cahill, but agents arrive searching for the USB drive after Plum falsely claimed online that he had it. The group kills the agents and escapes. Tamara manages to get a new car to avoid being tracked. Reacher meets Lila alone, and she reveals that she lied about everything: she is actually a journalist investigating the torture and killing of protesters in Indonesia, which her colleague Amisha survived, by the military, among whom was Sampson, lead by General Putra. Reacher then fights off attackers targeting Lila and Amisha at a bowling alley. Meanwhile, Jacob, Tamara, and Plum find Anna's car and discover a job card that's different from the one from the Pentagon. After Lila opens up to Reacher, they have sex at the hotel. Reacher travels to Baltimore to confront Sampson, who denies torturing or killing Indonesian civilians. When Reacher and Sampson question Cahill about his presence on the train, Cahill commits suicide.

Plum learns that Anna had been digitizing ten years old documents for the U.S. State Department. Sampson tells Reacher that he was in Indonesia to escort some scientists and that the torture and murders took place after his departure. Tamara infiltrates the building and finds a deleted file on Anna's computer. Reacher is found by CIA agents and knocks them out before escaping. The group later theorizes Anna intended to give the USB drive to Ben's kidnappers, but after learning he was dead, she sought revenge and carried a gun instead in the subway. Docherty tells Tamara that Ben has been found dead. Reacher suspects Anna mailed the USB drive to Lila, and, while searching for it, they are attacked; Reacher gets Lila onto a subway train before killing one attacker and fleeing. Jacob and Tamara discover that Ben was killed with an Indonesian karambit. Lila and Amisha kill other attackers with karambits in their hotel room and, when Reacher arrives, he finds the attackers dead and is arrested.