Reeling from his father’s murder, Parker goes to extreme lengths to hunt down the woman he holds responsible, mob boss Carla Marino, jeopardizing not only his own future but the team’s.

Parker’s pursuit of vengeance for his father’s murder could have deadly consequences, while his sister, Navy vice admiral Harriet Parker, faces an impossible choice.

When a petty officer’s death is connected to a blackmail investigation, the team is forced to work with Special Agent Sawyer on the case, which takes a terrifying turn for Torres. Meanwhile, Knight is offered an opportunity to train with NCIS Elite.

The team investigates a U.S. marine who is believed to have kidnapped a man's wife.

The cold case of a small-town death of a naval officer in the ‘90s is unexpectedly re-opened in the present day, sending the team on a manhunt for justice. The crossover starts on NCIS: Origins S02E05 Funny How Time Slips Away (I).

When McGee is kidnapped while promoting his latest book in the Deep Six crime series, the team investigates his self-professed “#1 fan” – and a potential link to a murder case involving stolen classified documents.

A kidnapped teen leads the team to a Navy SEAL who survived captivity by the Taliban but may have committed murder after returning home. Also, Jimmy finally shares his findings about the mysterious death of Parker’s mother with his boss.