Karen Read’s ‘20/20’ special airs Friday. Here’s what we know so far.

Watch 20/20 TV Show - ABC.com

**NCIS** has become one of the most successful and enduring television dramas in history, captivating audiences for over two decades. The series follows a team of special agents from the Naval Criminal Investigative Service as they solve complex crimes involving the U.S. Navy and Marine Corps. From its very first episode, *NCIS* established a unique blend of action, humor, and heartfelt storytelling that set it apart from other procedural dramas. The characters’ strong chemistry and emotional de