X-files 11x6 — The

: The investigation leads Mulder and Scully to Mud Lick, Kentucky, where people are being murdered in booby traps resembling Vietnam War punji pits.

: Skinner’s middle name is revealed to be Sergei . The X-Files 11x6

: Flashbacks reveal a young Skinner (played by Cory Rempel) and his friend John "Kitten" James (Haley Joel Osment) being exposed to the experimental gas. The gas turned James into a "monster" who collected trophies from victims, and Skinner’s forced silence during James's trial has haunted him for decades. : The investigation leads Mulder and Scully to

: Skinner goes AWOL after receiving a package containing a human ear and a note that says "Kitten". Mulder and Scully are ordered by Alvin Kersh to track him down. The gas turned James into a "monster" who

: The episode ends with a crop duster spraying gas, and Skinner losing a tooth, suggesting he was recently exposed to the MK-NAOMI agent.