Mark Harmon

As NCIS mourns the loss of Ducky, the agents find comfort in working on one of his unfinished cases involving a woman whose father was dishonorably discharged from the Marines.

Gibbs and McGee head to Alaska while the team works at home to uncover the conspiracy behind the serial killer.

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…

While trying to find the serial killer Gibbs was after, the NCIS team discovers another person has been tracking the case as well.

As the NCIS team searches for Gibbs after wreckage from his boat is discovered, they find out he was tracking a serial killer with journalist Marcie Warren, who wrote an…

While Pride fights for his life in the ICU, the team scours the city for the hit woman who attempted to assassinate him.

NCIS agents McGee and Torres travel to New Orleans to partner with Pride and his team in the search for a missing homeland security theoretical terror playbook. Crossover with NCIS…

While Special Agent Pride and the New Orleans team investigate a Russian sleeper agent who was involved with Abby’s brother, Luca, Sebastian flies to D.C. to partner with Abby on…

James welcomes actor Mark Harmon, and actress Zoe McLellan.

An armored transport bus with Naval brig detainees on board crashes and four prisoners manage to escape.

When Peter decides to become a famous actor, he becomes Tom Tucker’s agent as his first step toward stardom. Meanwhile, Chris dates a girl who looks disturbingly like a member…

Bartlet continues to struggle over the wisdom of assassinating the terrorist Qumari defense minister; after Ritchie declines to meet Bartlet, Sam and Toby play a dirty trick; as the search…

While Jed, Leo and Fitzwallace grapple with terrorism and moral absolutes, Josh and Amy grapple with each other over a welfare-reform bill; Donna represents the White House at a North…

Bartlet and the staff are on high alert when they receive reports of an impending attack on a military installation; Josh is furious when he discovers that a gift he…

The revelation that a Russian company may be building a heavy water reactor in Iran puts Jed in a difficult position as he prepares to meet with the new Russian…