When you watch NCIS Season 15 Episode 3, Nick Torres partners with a Metro PD detective for a stakeout and arrest, but he's surprised and alarmed when the detective vanishes while Torres is making the arrest. After he calls in the rest of the team, they discover that the detective met with a woman, bringing them to a case over a decade old involving organized crime. As the team delves deeper, they discover a more complicated story than they ever expected, involving a mysterious explosion that killed an undercover cop, missing bearer bonds, and a mob boss's son who claims to have gone legitimate. While working side by side with Detective Sergeant Sportelli from Metro PD, the team must discover the identity of the mystery woman and the reason Detective Higgins left the stakeout so suddenly and without any explanation, and what the truth is behind the explosion a decade earlier. Meanwhile, Ducky is guest lecturing at his alma mater in Edinburgh, Scotland, when an old friend approaches him with an intriguing opportunity in New York. Will Ducky take her up on the offer? Will the team find the missing detective? Find out what happens when you watch NCIS Season 15 Episode 3 online!