Tisha French

After a surprising turn of events in the Nine-Nine's attempt to track down Adrian Pimento's (guest star Jason Mantzoukas) hitman, the precinct drops everything when they suspect Holt is in danger.

When victims are found dead from arsenic poisoning in Long Beach, California, handwritten death threats and other clues have the BAU looking for an UnSub fascinated with Greek mythology. Meanwhile, Hotch has concerns about participating in Jack's third grade career day. Bruce Baumgartner guest stars.

While investigating a suspicious suicide, the squad wades into a nasty child-custody dispute between a dying man and his meth-addicted ex-wife. Meanwhile, Pope applies for the police chief job, but Brenda might have something to say about whether or not he gets it.

Zoe makes a grand gesture and Wade must make a tough decision about his future with the Rammer Jammer and BlueBell. Lavon and George meet their hero.

Leroy and Max take Jermaine (guest star Ethan Drake Davis) trick-or-treating, although Jermaine hopes they’ll drop him off at a party instead. The party becomes the least of their worries when Jermaine is infected with a zombie-esque virus by a demon cat. Meanwhile, Halloween is a busy night, full of paranormal activity, for LaFrey, Annie and Barry at the Bureau Underground.