How to Watch Every Series in the NCIS Franchise in Order

Created by Donald P. Bellisario, NCIS is one of the longest-running legal crime dramas in TV history. Launched in 2003 as a spinoff to JAG, NCIS stands for Naval Criminal Investigation Service and follows the leadership of Special Agent Leroy Jethro Gibbs (Mark Harmon) and his Major Case Response Team. The inaugural series is set in and around Washington D.C. and is currently in the midst of its 21st season.