When the CSI teams work two separate investigations, one involving a woman found murdered in Mexico and another of a local couple found dead in their driveway, they find the evidence in one case may help the other.
When the NCIS team investigates a marine sergeant's tragic fall from a building, her doctor, Grace Confalone, confides in Gibbs and suggests he treat it as a murder investigation. Also, Torres searches for a place to live.
The team investigates an off-base navy lodge for visiting families after a room is found splattered with blood and human tissue. Ducky discovers that the remains are of three people and have been expertly dissected, probably by a doctor.
As each team member deals with the absence of Gibbs in their own way, Ziva's past comes back to haunt her when she witnesses an assassination of a military attaché by her former Mossad partner. Ziva then seeks refuge at the Israeli Embassy.
When a convict from Agent Fornell's past escapes and threatens not only him but also his young daughter, Gibbs comes out of retirement to re-open the convict's armed robbery case. But, it seems the man has something other than vengeance on his mind.
The NCIS team is called to investigate a bloody, abandoned car registered to a missing navy lieutenant. After searching both the lieutenant's car and apartment, they learn that she had been profiling men in order to find herself the perfect mate.
The NCIS team is called to the scene of the murder of a petty officer who was part of an undercover arms operation. After his body is discovered, a Russian spy is pulled over for a traffic violation and is found with a recently fired gun in his car.
The team is called to investigate when a real estate agent discovers the body of a missing lance corporal in a vacant house. At the crime scene, Gibbs discovers that the man was buried in the backyard and then exhumed.
When an explosion kills a marine colonel on a military golf course, the team must work together with the Army Criminal Investigative Unit to find the killer. A CIA tip leads them to an abandoned warehouse rigged to explode with a cellphone.
The team investigates when an honoured marine veteran falls to his death at a hotel. After determining his death was not a suicide, the team discovers that he was homeless but living at the hotel with the help of a maintenance man who was a fellow vet.
Voight responds to a call about a suspicious duffle bag, and uncovers a frigid newborn baby. Determined to find the culprit who abandoned the infant, Intelligence receives a promising lead based on information provided by Chicago Med.
After a hooded man opens fire on their patrol car, Roman is left wounded and Burgess takes off after the shooter. No gun is found at the crime scene and the victim is a 17-year-old honour student who will likely never walk again.