Aired February 21, 2025: The NCIS team investigates a U.S. Naval engineer’s body found encased in concrete, missing for years. Clues point to Cold War-era espionage, pulling Mackey and JD into a web of international secrets. DeShawn and Evie tackle forensic puzzles, while the case tests the team’s trust amid rising Indo-Pacific tensions. Suspense and twists define this gritty episode.