NCIS is about Leroy Jethro Gibbs (Mark Harmon, “The West Wing”), a former Marine Gunnery Sergeant, who is now a special agent for NCIS. He is an experienced criminal investigator and a highly skilled interrogator whose unorthodox approaches and willingness to bend the rules always gets the job done. His team includes special agents Anthony Dinozzo (Michael Weatherly, “Jag”), Timothy McGee (Sean Murray, “Jag”) and Ziva David (Cote de Pablo, “The Jury”), who are supported by forensic specialist Abby Sciuto (Pauley Perrette, “Dawson’s Creek”) and medical examiner Dr. Donald "Ducky" Mallard (David McCallum, “The Replacements”).

NCIS is produced by Belisarius Productions in association with CBS Television Studios. The series is executive produced by Shane Brennan, Chas. Floyd Johnson, Gary Glasberg, Mark Horowitz, Mark Harmon and Donald P. Bellisario.