Watch Ncis S01e (21) May 2026

: Gibbs and Tony go undercover to infiltrate a local militia and track down stolen military weapons being sold on the black market.

: During a standoff at a pawn shop, Tony's "buyer" reveals herself to be an undercover ATF agent , Melinda Stone. Notable Guest Stars Bellamy Young as ATF Special Agent Melinda Stone. Watch NCIS S01E (21)

as Jimmy Palmer , making one of his earliest appearances as Ducky's new assistant. Sam Witwer as Staff Sgt. Rafael. Where to Watch : Gibbs and Tony go undercover to infiltrate

You can currently stream this episode on platforms like Paramount+ and CBS . Watch the official episode summary for NCIS S01E21: as Jimmy Palmer , making one of his

In , titled " Split Decision ," the team investigates the grisly discovery of a Marine's body impaled on a tree stump, which leads them into a dangerous world of illegal weapon smuggling. This episode originally aired on May 11, 2004 . Episode Highlights