$30 off NCIS: Season 4 DVD

The fourth season of NCIS begins with one of the investigators being charged with assassinating an Iranian prisoner. Former Mossad intelligence agent Ziva David (Cote de Pablo), who was introduced last season, has been framed, and there's only one man who can clear her name. Unfortunately, lead investigator Jethro Gibbs (Mark Harmon) has retired to Mexico. But since Harmon is the star of the show, Gibbs returns to the United States to help out his colleague. While most of his former team is happy, Tony DiNozzo (Michael Weatherly) has mixed feelings (During Gibbs' absence, DiNozzo became the de facto head of the team, and going back to being Gibbs' underling doesn't sit well with the usually easygoing special agent.)

NCIS (Naval Criminal Investigative Service) is more than just an action drama. With liberal doses of humor, it's a show that focuses on the sometimes complex and always amusing dynamics of a team forced to work together in high-stress situations. NCIS Special Agent Leroy Jethro Gibbs (Mark Harmon), a former Marine gunnery sergeant, whose skills as an investigator are unmatched, formerly led this troupe of colorful personalities.

Gibbs, a man of few words, only needs a look to explain it all. The team includes NCIS Special Agent Anthony DiNozzo (Michael Weatherly), an ex-homicide detective who may come off as the world's oldest frat boy, but whose instincts in the field are unparalleled; forensic specialist Abby Sciuto (Pauley Perrette), a talented scientist whose dark wit matches her Goth style and eclectic tastes, NCIS Special Agent Timothy McGee (Sean Murray), an MIT graduate whose brilliance with computers far overshadows his insecurities in the field and Ziva David (Cote de Pablo), a former Moussad agent who shares a bond with Gibbs over the death of his arch nemesis, Ari, the terrorist who killed former NCIS Special Agent Kate Todd.