Doggett wakes up in a small town in Mexico, and after confronting a man who steals one of his shoes he realizes that he can't remember his name or anything else about his life or circumstances. After spending a week in jail, a human smuggler named Domingo Salmeron bails him out and demands that he do a job for him. Doggett refuses, tracks down the thief, and discovers that he also had a small silver charm of a skull on him. He later decides to start working for Salmeron, although he refuses to break the law.
The FBI has been searching for Doggett, and Kersh calls it off due to increased national security demands even though a border crossing surveillance camera has caught Doggett on film. Doggett has flashbacks of a happier time with his son, and calls a Marine office for information after seeing that he has a Marine tattoo. His description leads Scully and Reyes to realize that Doggett may be south of the border. Meanwhile, a friend of Salmeron's tries to kill Doggett after meeting with a mysterious old man who wears a necklace of the skull charms with one missing. Doggett survives and confronts Salmeron at gunpoint; Salmeron says that the Cartel makes those who cause trouble for them disappear.
After Doggett has another flashback, Salmeron disarms him and visits the old man. He denies telling Doggett anything at gunpoint, but the old man doesn't believe him and gets into his head by touching his temples, leaving the same marks that Doggett has on his head. Reyes travels to Mexico and tracks down Doggett at Salmeron's garage. The Cartel-owned cops try to smoke them out, but the agents are rescued when American and Mexican federal officers arrive. Doggett recovers his memory (which, unfortunately, means having to relive getting the news of his son's death) and leads the agents to the Cartel memory eraser; he thinks he's done Doggett a favor by cutting him off from his painful memories, but Doggett says he's fine as long as he can remember the good times as well.
Episode Body Count
Two murder victims: Salmeron says Doggett matches the description of Henry Bruck, who is wanted by the FBI for a double homicide.
Nestor: killed by Doggett after he tries to shoot him.
American man: Reyes search for Doggett first leads her to a man who was beaten to death.
Doggett's tattoo refers to the 1983 bombing of a Marine barracks in Lebanon, which killed 299 people, but I'll have to chalk that up to a mass wartime count.
Cumulative Body Count (189/202 episodes, 1/2 movies)
Humans: 2,136Creatures: 130
Grand Total: 2,330