Gibbs and Franks investigate the disappearance of a young Marine connected to a mysterious compound with a charismatic leader, and Lala’s fate is revealed.
When the body of a college swimmer washes up on the beach, the team must determine if it was an accident or murder. Also, Gibbs prepares for his first interrogation.
Young Ducky is sent to Camp Pendleton to shadow the team while they work a case and, in the process, he reconnects with Gibbs after the two crossed paths years earlier.
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Gibbs and the NIS team investigate the small-town death of a naval officer, but struggle to come up with justice. This episode is the beginning of a crossover that ends on S23E5 of ‘NCIS’.