While investigating a Marine’s murder, the NCIS team uncovers a labyrinth of live-streaming spy cameras hidden in the rooms of a Virginia motel.

The lead suspect in an NCIS murder investigation is a woman Gibbs' friend, Phillip Brooks, met on a dating site. Also, Sloane has a secret admirer on Valentine's Day.

McGee and his wife Delilah's (Margo Harshman) Bahamian vacation turns into a high-stakes mission when a case NCIS is tracking of a dead escape room manager has ties to the island. Also, Gibbs fears the worst when his search for Fornell leads to blood.

Evidence from the stabbing of a Marine Sergeant leads Torres to meet his father who left when he was a child.

When members of an NCIS Regional Enforcement Action Capabilities Training Team (REACT) are killed during an explosion, NCIS Special Agent Jessica Knight (Katrina Law), the lone surviving member, helps crack the case using high tech body armor.

Gibbs and Parker go on a road trip to find one of the serial killer's victims. Also, Agent Knight goes undercover at a large manufacturing company with ties to the murders.

NCIS investigates the death of a man on a cruise ship whose body is discovered in the ship's sauna by none other than McGee's mother-in-law, Judy.

Parker’s delinquent past resurfaces when NCIS is called to Philadelphia to investigate the death of a Navy petty officer.

Agent Parker steps up to protect Director Vance after a terrifying home invasion. Also, the team detects advancements in Jessica and Jimmy’s blossoming romance.

When an old pal of Torres’ comes to him, disheveled and bloodied for guidance amidst an undercover FBI operation and then disappears, NCIS helps track him down. Also, McGee prepares to be a contestant on a popular game show

NCIS works to solve the murder of a senator’s daughter who has a rebellious reputation and large online following. Also, Jimmy gets competitive with an old college rival.

When the NCIS team engages in Walk-a-Mile day to gain a new perspectives on different departments, things take a turn when Kasie receives a distress call from a mysterious man.

After discovering the remains of a Marine captain, the NCIS team travels to Texas to interrogate the suspected killer.

As Vance prepares to host diplomatic talks with Venezuela, the team is called in to investigate the dead body of one of his inside men.

NCIS stages a fake wedding for two of its own in an attempt to take down the mob.

As NCIS investigates a dangerous connection between the Nexus cartel and Parker's longtime nemesis, mob boss Carla Marino, the team uncovers a high-stakes plot involving stolen nuclear material. With time running out, Parker is forced into an uneasy alliance that could determine the fate of the operation - and his own future