1: Discover how Mark Harmon almost turned down his role as Gibbs on NCIS.

2: Learn about the real-life Naval Criminal Investigative Service that inspired the show.

3: Find out how Pauley Perrette’s fear of forensic science led her to her role as Abby.

4: Uncover the reason why Michael Weatherly decided to leave the show after 13 seasons.

5: Explore how the show’s iconic theme song was created by composer Brian Kirk.

6: Learn about the guest stars who have made memorable appearances on NCIS over the years.

7: Discover which actor from the show has a background in law enforcement.

8: Find out how NCIS has inspired real-life criminal investigations and forensic science advancements.

9: Explore the hidden Easter eggs and references scattered throughout NCIS episodes.