Who Is in the Cast of NCIS?

The cast of "NCIS" includes actors Mark Harmon, Michael Weatherly, Pauley Perrette, David McCallum and Sean Murray. Other cast members are Cote de Pablo, Brien Dietzen and Rocky Carroll.

On "NCIS," Mark Harmon plays the lead role of Special Agent Leroy Jethro Gibbs. Gibbs is a former marine who works for the Naval Criminal Investigative Service, or NCIS. He is the leader of a group of special agents who are part of the Major Case Response Team. Harmon has starred in this role since 2003. Before "NCIS," he had roles in various television and film productions including "Fear and Loathing in Las Vegas," "Local Boys," "Flamingo Road" and "St. Elsewhere."

Michael Weatherly plays the role of Special Agent Anthony DiNozzo on "NCIS." DiNozzo is Gibbs' second in command. A former Baltimore Police officer, DiNozzo is an experienced investigator who has a love for movies and women. Weatherly was born in New York City in 1968. He is also known for his work as Logan Cale in the television series "Dark Angel."

Pauley Perrette plays goth forensic scientist Abby Sciuto on "NCIS." Sciuto is a bit of a technology nerd and a daughter-like figure to Gibbs. Perrette herself enjoyed science and earned a master's degree in criminology at Valdosta State College before becoming a successful actress.