Watch Ncis S01e (21) Apr 2026

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

You can currently stream this episode on platforms like Paramount+ and CBS . Watch the official episode summary for NCIS S01E21: Watch NCIS S01E (21)

: While it initially looks like an accident, Ducky determines the Marine was killed by a shoulder-launched assault weapon before being placed on the stump. : Gibbs and Tony go undercover to infiltrate

: 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)