This set contains all twenty-four episodes from the seventh season of the CBS drama NCIS starring Mark Harmon as special agent Jethro Gibbs as the leader of a forensic crime unit.

With the inauguration of its second season, the popular procedural streamlines its series title, forsaking the cumbersome Navy NCIS: Naval Criminal Investigative Service for the more succinct NCIS. Joining series regulars Mark Harmon (Leroy Jethro Gibbs), Shana Alexander (Kate Todd), Michael Weatherly (Tony DiNozzo), Pauley Perrette (Abby Sciuto) and David McCallum ("Ducky" Mallard) is former guest actor Sean Murray as MIT-educated lab tech Tim McGee, who is invited to join the NCI team by head man Gibbs himself. Amidst such story elements as kidnappings, serial killers, serial rapists, crop circles, mob hits, transsexuals, disembodied eyeballs and bikini contests, the second season permits the viewer to learn just a tiny bit more about the clouded past lives of Leroy Jethro Gibbs and Dr. Donald "Ducky" Mallard; we also meet for the first time Ducky's 96-year-old mother, played by Nina Foch. And, given the world climate, it isn't surprising that this season's episodes would make numerous pointed references to the Iraq War and the general unrest in the Middle East. The devastating season finale "Twilight" marks the return of the team's most formidable adversary, double agent and terrorist Ari (Rudolf Martin), who among other acts of villainy cold-bloodedly murders one of NCIS' most popular leading characters.

A team of special agents assigned to investigating scandals and crimes associated with the Navy and Marine Corps get more than they bargained for in the first season of NCIS (Naval Criminal Investigative Service). Led by Special Agent Leroy Jethro Gibbs (Mark Harmon), the agents often use unorthodox, yet highly effective means to get to the bottom of tricky cases tied to the US military.