Gibbs and Franks delve into the vanishing of a young Marine linked to an enigmatic compound and its captivating leader, uncovering the truth behind Lala's fate.

The discovery of a college swimmer's body on the shore throws the team into turmoil, forcing them to confront the chilling possibility of either tragedy or deliberate violence. Meanwhile, Gibbs steels himself for a daunting first interrogat…

Ducky Mallard is dispatched to Camp Pendleton to observe the team as they investigate a case, an assignment that unexpectedly brings him into contact with Gibbs, rekindling a connection forged years before.

A palpable tension settles over the team with the unexpected arrival of Mason, Franks’ estranged older brother. He’s come to town at his lowest point, pleading for assistance. Simultaneously, the team delves into the theft of a Navy bank, w…

Gibbs and the NIS team examine the death of a naval officer in a quiet town, yet find themselves grappling for a sense of justice. The story continues in NCIS, Season 23, Episode 5, titled "Now and Then (II)."

A tip from an unknown source reveals the body of a young Marine at a disturbing crime scene, and Randy suspects a link to an earlier incident where a coin was found lodged in the victim's throat. Meanwhile, Franks endeavors to locate valuab…

The team delves into the death of a Marine, a man recently selected for a highly confidential assignment. Meanwhile, Wheeler's private world is disrupted; Lala is unsettled by unforeseen tidings from Vera. Gibbs and Diane find themselves n…

The team rallied together after Lala's favorite colleague was wounded, determined to uncover the perpetrator of the attack, collaborating closely with the Oceanside Police Department. Meanwhile, Franks made a visit to his brother Mason at t…

The team's discovery of Gibbs' impulsive Las Vegas wedding to Diane casts a contemplative light on the couple's prospects. Simultaneously, they pursue an investigation into a deadly bombing at a cinema, uncovering links to the Pruitt compou…

The arrival of a Marine captain at Camp Pendleton, displaying signs of a rapidly progressing illness, triggered an immediate lockdown by Naval Investigative Service. Gibbs found himself unexpectedly in command as fear began to ripple throug…

The discovery of a lieutenant’s waterlogged body, potentially linked to an international smuggling operation, prompts the involvement of NIS Panama agents, and brings Gibbs into contact with a familiar adversary: Special Agent Dwayne Pride.…

As the NIS Regional Director attempted to have Mary Jo reassigned, she reached out to a former acquaintance from Atlantic City, seeking assistance in investigating the mysterious deaths of two Marines by the roadside.

The arrest of Dr. Tango—accused of removing human remains from a national park—necessitates the return of Dr. Donald “Ducky” Mallard to aid the team in establishing his innocence.

With the serious injury of their valued K-9 officer, Gary Callahan, during an investigation, the NIS initiates a frantic search for those responsible. Simultaneously, a previously unknown period from Frank’s past, predating his time in Pend…

Lala's fierce resolve to steer Manny away from gang involvement plunged the team directly into the heart of a territorial dispute.

As Gibbs and Lala's professional partnership deepens through a shared investigation, Gibbs’ already strained long-distance romance with Diane faces fresh challenges with the sudden appearance of an unforeseen visitor.

As a car bomb detonates just beyond the National Intelligence Service headquarters, Wheeler swiftly assumes control of the situation. Simultaneously, the source of Frank's long-held aversion to legal professionals comes to light.

The possibility of closing the Camp Pendleton office has left the team facing an unclear path ahead.