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Barry Plyman

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Barry Plyman, a.k.a. "The Chemist", was a serial killer, poisoner, and hitman who appeared in Season Eleven of Criminal Minds.


Born in an Asian country (likely China or Japan), Plyman's birth mother, Miyoko Hyun, was killed in a botched drug trial, leaving him to be raised by a woman named Renee Plyman in a Western country. At some point in his life, Renee died from unknown causes. He later had a son named Jarvis, but he died of leukemia at the age of six. At some point in his life, he became a hitman and joined a network of hitmen that cropped up after the dismantlement of the Silk Road by the FBI in 2013. At some point in his career, he was hired to kill a lawyer.


Plyman is seen returning to the network's safe house, where Zac Rubenis and Barry Winslow, the group's hostage and technical analyst, are already waiting. Just then, SWAT agents storm the house, led by the BAU. After Rubenis is killed, Plyman tries to escape but is cornered by more agents. As a result, he takes out a syringe from his suitcase and injects himself with the toxin contained inside, killing himself.

Modus OperandiEdit

Plyman killed the victims in his contract kills by poisoning them with poisons and/or toxins that could be absorbed into the skin and kill a person in seconds. These poisons/toxins would be placed on objects that were going to be touched by the victims. Based on his nickname, it can be assumed that he would make the poisons/toxins he used on his victims.


No official profile of Plyman was made by the BAU, since they focused on the network as a whole.

Known VictimsEdit

  • Killed numerous unnamed victims prior to Entropy
  • Unspecified date and location: Unnamed lawyer




  1. He is classified as this despite only one victim being confirmed in the episode, as he is extremely likely to have killed many more people in his career as a hitman, considering his skills and the fact that his poisons/toxins do not leave any trace.

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