Black Widow is the second episode of NCIS: Los Angeles Season 2 and also the 26th episode of the entire NCIS: Los Angeles series.
An NCIS Special Agent is murdered while on assignment and the OSP team discover that the group responsible is after a seemingly ordinary housewife who lives in downtown Los Angeles with the team soon learning that the housewife is hiding something..
- Deeks officially joins the team on a permanent basis, becoming Kensi's new partner.
- This is the only episode in the series to employ acting in repertory; in which multiple actors assume more than one role in an episode.
|G. Callen||Chris O'Donnell||NCIS Special Agent and the leader of the Office of Special Projects field team.|
|Sam Hanna||LL Cool J||A former Navy SEAL-turned-NCIS Special Agent with the Office of Special Projects.|
|Henrietta Lange||Linda Hunt||Operations Manager with the Office of Special Projects.|
|Marty Deeks||Eric Christian Olsen||A Detective with the Los Angeles Police Department and also the LAPD/NCIS liaison as well as NCIS Special Agent Kensi Blye's partner.|
|Kensi Blye||Daniela Ruah||NCIS Special Agent with the Office of Special Projects and LAPD Detective Marty Deeks's partner.|
|Eric Beale||Barrett Foa||Tech Operator with the Office of Special Projects.|
|Nate Getz||Peter Cambor||Operation Psychologist with the Office of Special Projects.|
|Emma Mastin||Liane Balaban||A housewife.|
|Clay Mastin||Gary Weeks||Emma's husband.|
|Joshua Mastin||Austin Chase||Emma's young son.|
|Jon Craig||Steven Brand|
|Theirry||Waleed F. Zuaiter|
|Sheik||Waleed F. Zuaiter|
|Taxi Driver||Hrach Titizian|
|Traffic Cop||Hrach Titzian|
|Flirty Lady||Andrea Carina Pearson|
|Employee (Black Widow)||Andrea Carina Pearson|
|Waitress (Black Widow)||Amy Wieczorek|
|Store Manager||Amy Wieczorek|
|Sporty Man||Kristofer McNeeley|
|Sporty Woman||JJ Snyder|
|Man||Daniel Hugh Kelly|
|Dan Williams||Allan Louis||An NCIS Special Agent and the main murder victim.|
|Female NCIS Agent||Janet Goldin|
|Cocktail Lounge Patron||Evan E. Yu|
|Vakar||Pascal Petardi||Uncredited role.|