John Churchill

Intelligence investigates the shooting of a parole officer. Voight is forced to allow an outsider into the bullpen.

As Deborah struggles with writer’s block and Ava with a broken heart, the pair decide to take advantage of the Pennsylvania woods and clear their heads.

When four men go missing in rural Oregon, the BAU searches for a common link among them in order to track them down. Also, JJ gets upset when her son Henry doesn’t want to celebrate Halloween this year.

When a teenager and her sister are the sole survivors of the gruesome murder of four members of one family in a quiet suburban neighborhood, Grissom and his entire team investigate the crime. What initially looks like a bizarre cult murder becomes more disturbing when they discover the motive behind the massacre.

The killer eluded the team before and seems determined that Grissom remember that fact. Meanwhile, Nick and Warrick, assigned to investigate the mysterious vehicular accident, give into their egos as each tries to solve the case first.

The murder of a military hero draws the FBI into Brady's investigation.