For eight seasons, 'JAG' executive producer Donald Bellisario has brought us the inner workings of the United States Navy's office of the Judge Advocate General, exposing its behind-the-scenes courtroom secrets and procedures. Now he shifts his focus to the team from the NCIS (Naval Criminal Investigative Service), the government agency that investigates all crimes involving Navy and Marine Corps personnel, regardless of rank or position. Leading this team that operates outside of the military chain of command is NCIS Special Agent Leroy Jethro Gibbs (Mark Harmon), a skilled investigator and interrogator who is smart, tough and willing to bend the rules to get the job done. Working under Gibbs is Agent Anthony Dinozzo (Michael Weatherly), a former homicide detective who joined NCIS just a few years ago, but who has instincts that can come only from working on the streets. Joining them is Agent Abby Sciuto (Pauley Perrette), a gifted forensic scientist whose dark wit matches her goth-style hair and clothes, and Dr. Donald 'Ducky' Mallard (David McCallum), a medical examiner. From murder and espionage to terrorism and stolen submarines, these special agents traverse the globe to investigate all crimes with Navy or Marine Corps ties. Through season one a new character has been introduced -- special agent Tim McGee (Sean Murray, 'The Random Years') whose computer skills will be a very big part of the NCIS team. Special Agent Caitlin 'Kate' Todd (Sasha Alexander, 'Dawson's Creek'), a former United States Secret Service agent, has brought her intelligence and gutsy personality to the team through first 2 seasons, until during her duty in season two finale, when she was murdered by a terrorist. In season three, the NCIS team welcomed Mossad Agent Ziva David (Cote de Pablo), who takes Kate's place in the team, and the NCIS team gets a new director, Jenny Shepard (Lauren Holly, 'Picket Fences'). Both Cote and Lauren were recurring stars before they became regulars. NCIS is from Belisarius Productions, in association with Paramount Network Television. NCIS theme song is written and performed by numeriklab. NCIS won 2 ASCAP Awards 2004 for Top Tv Series (Matt Hawkins, Henri Jackson, Neil Martin, Steven Bramson). In 2005, NCIS's composer Joseph Conlan won an BMI TV Music Award for his work on NCIS.