The BEST seasons of NCIS

Every season of NCIS ever, ranked from best to worst by thousands of votes from fans of the show. The best seasons of NCIS!

Explore the inner workings of the government agency that investigates all crimes involving Navy and Marine Corps personnel, regardless of rank or position. Leading this team is NCIS Special Agent Leroy Jethro Gibbs, a skilled investigator and interrogator who is smart, tough and willing to bend the rules to get the job done.