During a security conference, an honored Marine veteran falls to his death, prompting the conference to be shut down while the NCIS team investigate the circumstances surrounding his death. In the process of clearing the Marine's name, the team discover evidence that an illegal human trafficking group might be operating in the D.C. area.
- Michelle Lee goes undercover for the first time.
- It's revealed that Lee can also speak Chinese.
- The opening scene features archive news footage of then-Secretary of Defense Donald Rumsfeld, simulating the presence of this personage at the reception.
- The opening scene in an 'upscale Washington hotel' was filmed at the hotel Embassy Suites Los Angeles - International Airport/North.
- Luis Romero is played by late actor Francesco Quinn (son of the late Anthony Quinn). Francesco previously appeared in the Season 1 episode, One Shot, One Kill (episode) as Gunnery Sergeant Freddy Alvarez.
|Leroy Jethro Gibbs||Mark Harmon||Special Agent in charge of the Major Case Response Team, NCIS.|
|Anthony DiNozzo||Michael Weatherly||Senior Special Agent, MCRT, NCIS.|
|Ziva David||Cote de Pablo||Mossad Liaison to the NCIS.|
|Abigail Sciuto||Pauley Perrette||Chief Forensic Specialist, NCIS.|
|Timothy McGee||Sean Murray||Junior Special Agent, MCRT, NCIS.|
|Jennifer Shepard||Lauren Holly||Director of NCIS.|
|Donald Mallard||David McCallum||Chief Medical Examiner, NCIS.|
|Jeanne Benoit||Scottie Thompson||Tony's girlfriend.|
|James Palmer||Brian Dietzen||Ducky's assistant.|
|Michelle Lee||Liza Lapira||An NCIS Special Agent who was originally assigned to Gibbs's team. Now assigned to the NCIS Legal Department.|
|Davey Chen||Ming Lo||A Chinese national and businessman responsible for running an illegal prostutition involving underaged Chinese teenage girls.|
|Andy Nelson||Jonathan M. Woodward||Congressman Getz's assistant.|
|Frank Getz||Ned Schmidtke||A Congressman|
|Luis Romero||Francesco Quinn||A former Marine and a hotel janitor.|
|Marty Pearson||Michael Gilden||Abby's boyfriend.|
|Maria (Once a Hero)||Laura P. Vega||A maid.|
|Brian Wright||Michael M. Foster||Victim. Uncredited role.|
|Donald Rumsfeld||Himself||Archive footage. Uncredited.|
|NCIS Season Four|
|Shalom ♦ Escaped ♦ Singled Out ♦ Faking It ♦ Dead and Unburied ♦ Witch Hunt ♦ Sandblast ♦ Once a Hero ♦ Twisted Sister ♦ Smoked ♦ Driven ♦ Suspicion ♦ Sharif Returns ♦ Blowback ♦ Friends and Lovers ♦ Dead Man Walking ♦ Skeletons ♦ Iceman ♦ Grace Period ♦ Cover Story ♦ Brothers in Arms ♦ In the Dark ♦ Trojan Horse ♦ Angel of Death|