Criminal Minds (2005)

S9E22 Fatal

In Long Beach, several victims succumb to arsenic poisoning, prompting an investigation that uncovers the murderer’s eerie obsession with Greek mythology, evidenced by handwritten death threats and other puzzling clues left for the victims. At the same time, Hotch grapples with his anxieties about attending Jack's career day in the third grade, unsure of how to contribute meaningfully.