NCIS Uncovered: Behind The Scenes Secrets
It was originally a JAG spinoff
When NCIS first started, it did not come off a separate script with an original idea. It was actually formed from the popular TV show JAG. In season eight of the CBS Naval legal procedural show, there were two episodes titled “Ice Queen” and “Meltdown.”
They introduced the new team from NCIS and acted as a backdoor pilot for the show. It was received well by audiences and a new CBS show was born.