Holly Gibney is at home, considering taking more pain medication, when Isabelle Jaynes arrives with two FBI agents, Herbert Beale and Curtis Rogan.
Rogan is a profiler who flew in to work on a case involving serial killers and cannibalism.
Izzy asks Holly about a newspaper headline that suggests the involvement of cannibalism in their case, anticipating a press conference by the District Attorney and Chief Murphy.
Forensic analysis and the FBI team have uncovered diaries in the bedroom closet of Emily Harris that began before the murder of Jorge Luis Castro.
Rogan points out the diaries contain over a thousand pages of what he describes as "fascinating" content, whereas Izzy refers to it as "terrifying."
Izzy shares that Emily Harris was more psychologically disturbed than her husband Rodney, and she influenced him to go from theoretical discussions about cannibalism to actual murder and consumption.
The diary entries reveal an intense hatred Emily harbored, evidenced by repetitive derogatory language targeted at Castro and others.
There's speculation that Emily may have even kept her hate-diaries secret from her husband.
Rogan notes the psychological goldmine the diaries represent, while Holly uses a more negative term to describe their content.
The diaries suggest Emily viewed the consumption of Castro as a miracle cure for physical ailments and believed it provided various advantages, but the effects eventually faded, prompting further acts of cannibalism.
Izzy laments that the couple should have been caught earlier given their sloppy attempts at cleaning up crime scenes.
Holly comments on the unlikelihood of older people being suspected as serial killers and cannibals.
Izzy credits Holly for her role in uncovering the truth, and Holly acknowledges Barbara and her poet friend Olivia Kingsbury for piecing together the mystery.
Beale and Rogan prepare to leave, warning Holly of the impending media attention, which Holly acknowledges with a joking remark about complimentary nuts, prompting laughter among them.