As Bill interrupts to show them a newspaper article, the team is discussing a killer in the conference room and Holden mentions that making furniture out of human remains qualifies as "organized behavior". This references killer, Ed Gein, one of the most notorious killers of all time. After the death of his mother, he began grave robbing, making furniture, clothing, and other trophies from human bones and skin. A number of famous movie characters are modeled on Gein, such as Norman Bates in Psycho (1960), Leatherface in The Texas Chain Saw Massacre (1974), and Buffalo Bill in The Silence of the Lambs (1991).
There actually was a Darrell Gene Devier who murdered Mary Frances Stoner on November 30, 1979 in Adairsville, Georgia. He was convicted of her murder in November of 1983 after several mistrials and executed by electric chair in May of 1995.
As of October 2020, this is the highest rated episode of the series.