Pride's temporary replacement joins the team as they search for a former bomb maker for the IRA; Pride thinks about taking another position in the agency.
The key witness of an investigation into the death of a Navy intelligence officer gets close to Sebastian; Pride struggles to get used to his new position.
Parker and Gibbs set off to search for a serial killer's victim; Agent Knight investigates a manufacturing company connected to the murders by going undercover.
A Navy Chief Warrant Officer is suspected of trying to sell recently stolen proprietary software used by the United States military to pilot combat drones.
The NCIS team travels to intercept a civilian research vessel in the North Atlantic that is carrying wounded Navy personnel, but nothing is what it seems.
A Navy lieutenant is discovered dead and his body missing an eye; the NCIS team investigates his death only to be led into the violent world of cage fighting.
Jimmy and Kasie are exposed to a lethal biotoxin during their investigation of an intruder's death at Quantico and the team scrambles to find an antidote.
The team responds to a series of crimes committed by an unknown subject that bear stunning commonalities with The Chameleon, also known as Everett Lynch.
The BAU sets off in search of Everett Lynch and his daughter; Spencer goes to meet his mother and has a surprisingly impactful visit as she has a lucid moment.
The team visits the city of Des Plaines, Ill., in the wake of several fatal shootings to investigate a case of what they believe to be a copycat serial killer.
Tommy attempts to reign in her officers as they seek revenge for the death of one of their own; the mayor is threatened by a recently arrested acquaintance.
The team exposes a conspiracy in a tight-knit community when a petty officer is found dead; Lasalle waits to hear the results of his family's investigation.
The NCIS team puts an informant in protective custody during a murder investigation; Pride needs help from his brother in order to become trusted by informant.
After a Navy contractor is mysteriously murdered, the team begins their investigation and unearths evidence that they lived two separate lives for decades.
Pride is taken by two masked men during a sunrise jog and forced to perform a series of tasks for them in order to protect a captive Wade and his father.