A routine traffic stop goes wrong when the body of a Petty Officer is discovered in his car with "NCIS" written in blood on the seat beside him. The team believe that a Russian spy is responsible but the case hits a snag when a Homeland Security agent claims that the spy is working for the government. However, the team soon discover that an arms dealer connected to a former NIS/NCIS Special Agent may actually be the true killer....
- With Gibbs having returned to NCIS, Tony struggles to cope with being Senior Agent once again.
- Ziva reveals that she's fluent in French, German, Italian, Arabic and Russian.
|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.|
|Michael Franks||Muse Watson||Gibbs's former C.O and the one who helped him join NCIS/NIS.|
|Roy Carver||Geoff Pierson||A Homeland Security official who was also a CIA agent.|
|Nikolai Puchenko||Ravil Isyanov||Alias "John T. Stevens", a Russian who's arrested when a gun is found in his car.|
|Marty Allen||Albie Selznick||Puchenko's lawyer.|
|Lou Giotti||Nolan North||A Metro Police Officer.|
|Arkady Kobach||V.J. Foster||The person of interest in Operation Sunburst. Is later killed by Mike Franks.|
|Miguel Fernandez||Armando Molina||A man who appears in the episode.|
|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|