1: NCIS's 1000th episode resolves a 21-year-old villain storyline in a satisfying way.

2: Fans finally get closure on a long-running mystery in NCIS's landmark episode.

3: The show's creators deliver on a promise made over two decades ago.

4: Discover how NCIS ties up loose ends with a long-awaited resolution.

5: Witness the culmination of a storyline that has been years in the making.

6: NCIS's milestone episode brings the past and present together in a thrilling conclusion.

7: Celebrate the show's landmark achievement with a groundbreaking narrative twist.

8: Experience the emotional payoff as NCIS unravels a complex and compelling tale.

9: Join the celebration as NCIS reaches its 1000th episode and finally puts an old storyline to rest.