NCIS is one of the most popular TV shows, and for good reason, but there are also many similar shows that deserve the same attention. NCIS has been on the air for over 20 years and has also led to the formation of several NCIS spinoffs. The show has managed to maintain its popularity despite numerous cast changes and character exits, highlighting the success of its formula. Recent NCIS seasons have even revealed the exit of major main characters, demonstrating its ongoing development.

NCIS's popularity over the years can be attributed to its familiarity, routine, and likable characters. However, NCIS is just one of many procedural TV shows that highlight charismatic characters who work together to bring criminals to justice. The niche of NCIS is that it focuses on crimes related to Navy and Marine Corps personnel, and while every show has its own focus, there are a few crime...