NCIS is an American police drama series about a team from the Naval Criminal Investigative Service, which is responsible for investigating criminal cases relating to the US Navy and Marine Corp.
Mark Harmon as Special Agent Leroy Jethro Gibbs
Michael Weatherly as Special Agent Tony DiNozzo
Sean Murray as Special Agent Timothy McGee
Cote de Pablo as Special Agent Ziva David
Pauley Perrette as Abby Sciuto
David McCallum as Dr. Donald "Ducky" Mallard