Doggett and Reyes are involved in a sting operation attempting to bring in a sicko named Erwin Lukesh known for cutting out woman's tongues and disappearing before he can be caught. Lukesh manages to kill Reyes, vanish in a moment's time as Doggett confronts him in an alley, and shoot Doggett with Reyes' gun after reappearing behind him. So it's kind of odd when Doggett visits Reyes in her new apartment, right before Skinner calls her to let her know that Doggett has been found shot and seriously injured. Reyes can't understand why how Doggett could have visited her right before the call, and Scully suggests it might be something along the lines of the visitation from her dead father.
Reyes becomes a suspect in the shooting after the ballistics are matched to her weapon. Follmer also says someone witnessed her shoot her partner: Lukesh. Reyes is flabbergasted and enraged, but Doggett regains enough in the way of motor skills to tap out "Lukesh" in Morse code with his fingers. It turns out that Lukesh is feeding the women's tongues to his bedridden mother. Skinner finds that Lukesh is a former mental patient living near the crime scene, and using a new communications method Doggett reveals that he's surprised that Reyes is alive.
Reyes wonders if Lukesh can travel between parallel universes and vegetable Doggett ended up following him into one, forcing out apartment-visiting Doggett. She also directly accuses Lukesh of using this power to live out his sick fantasies. Lukesh's mother has also grown suspicious of him and demands to know why he has a gun and is sneaking around; Lukesh ends up killing her. Doggett tells Reyes that if she's right, the Doggett that got forced out should come back if she pulls the plug. Expecting that Lukesh will try to kill Reyes in her apartment, the FBI does a sting and manages to kill him. Reyes tearfully pulls the plug on Dogget and finds herself back in her apartment, both agents still alive.
Dedicated to the memory of Ricky Loyd Arreguin, a 16-year-old boy who was murdered for no apparent reason by a Los Angeles gang in 2001. According to the X-Files Wiki, Arreguin's stepfather worked on props on the show.
Episode Body Count
Lukesh's mother: stabbed to death by Lukesh after she says she'll talk to the FBI about him.
Erwin Timothy Lukesh: shot by Follmer as he holds Reyes hostage with a razor.
And then there's Bizzarro Doggett and Reyes, plus all the women Lukesh kills in other universes, but considering how I haven't been counting alternate universes I won't add them. It seems like the actions may well have put everyone into yet another parallel universe, meaning none should count, but the theme seemed to be that the events of the episode put everything right in the main universe.
Cumulative Body Count (186/202 episodes, 1/2 movies)
Humans: 2,124Creatures: 130
Grand Total: 2,318