Elyse Mirto

When Reid discovers former FBI Special Agent Owen Quinn (James Urbaniak) locked inside a storage unit, the BAU questions the credibility of Quinn's bizarre accounts of searching for an UnSub that he named 'The Strangler'.

After a Marine is found murdered in Quantico hours after calling Gibbs to discuss a possible case, Bishop and McGee go undercover as a married couple to run surveillance on a Marine Lieutenant and his wife.

When several people in Los Angeles suffer from seizures as a result of product tampering of over-the-counter medications, Don and his team discover that a former chemist from a large pharmaceutical company is to blame. While tracing the culprit to the Sibley mountains, the team meets up with Special Agent Edgerton (guest star Lou Diamond Phillips), who is tracking a cattle rancher-turned-federal fugitive for selling tainted beef and killing a U.S. Marshall. Megan figures out that their meeting isn't random, as the two fugitives have something in common.

Harm and Mac go to Saudi Arabia to defend a Lt. Donato, a naval aviator who refuses to where an abaya and veil while off base.

Rush mixes pleasure with business when her boyfriend, Joseph, asks her to reopen a 2003 case involving an autistic boy named Brent Harding who witnessed his parents' murder. Brent's photographic memory and his inability to lie lead Rush to a series of clues and suspects.