Adam Chambers

Agent Hotchner revisits the first case he worked at the BAU when details come forth that one of the deadliest serial killers in New England's history has struck again after a 10-year hiatus.

After a rise in deaths caused by black market opioid use, the NCIS team links the street drug to funding for terrorist activities.

A covert identity created for one of Gibbs' undercover cases 20 years ago resurfaces after a murder victim is found living under the alias.

Rosewood and Villa unravel an illusory case when an escape artist is found dead in a wooden trunk; Hornstock's time with the East Miami PD may be coming to an end; Rosewood gets to know Adrian to see if he's the right guy for Villa.

The team has to partner with the FBI when a Marine dies after being exposed to a rare nerve gas in order to find out who was behind the murder. Deeks shares his dream to quit law enforcement and open up his very own bar.