NCIS

From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected to Navy and Marine Corps personnel, regardless of rank or position. Watch NCIS series full episodes online streaming for free. NCIS (Naval Criminal Investigative Service) is an American police procedural drama television series surround with a fictional team of special agents from the Naval Criminal Investigative Service, which conducts criminal investigations involving the U.S. Navy and Marine Corps.