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LD50 is the fourteenth episode of NCIS: Los Angeles Season 1.

Synopsis

OSP investigate when two career criminals disguised as Marines are found dead and soon uncover information that there will be an auction where the weapon will be sold and be used to launch a bio-terrorist attack.

Plot

Callen after Sam's told him they could have been exposed to the same biological weapon that not only killed two criminals but also some wildlife.

Trivia

  • This is the last episode of the entire NCIS: Los Angeles series to have James S. Levine compose the background music as he was later replaced by Jay Ferguson, beginning with the episode, "Chinatown".

Cast

Series Regulars

Name Portrayed by Role
G. Callen Chris O'Donnell An NCIS Special Agent in charge of the Office of Special Projects field team and who is partnered with fellow NCIS Special Agent Sam Hanna.
Nate Getz Peter Cambor Psychologist with the Office of Special Projects.
Kensi Blye Daniela Ruah An NCIS Special Agent with the Office of Special Projects and who is partnered with NCIS Special Agent Dominic Vail.
Eric Beale Barrett Foa An NCIS Tech Operator with the Office of Special Projects.
Henrietta Lange Linda Hunt The Operations Manager for the Office of Special Projects.
Sam Hanna LL Cool J An NCIS Special Agent with the Office of Special Projects and who is partnered with NCIS Special Agent G. Callen.

Recurring Cast

Name Portrayed by Role
Dallas (Breach) J.R. Bourne Nightclub owner and head of the local crime syndicate.

Other Cast

Name Portrayed by Role
Esther Balmore Julianna McCarthy Former expert on the development of toxins, now suffering from Alzheimer's Disease
Gage Jenson Dameon Clarke
Simon Amputuan Burt Bulos Filipino arms dealer detained by NCIS.
Jacobus Troyger Andrew Connolly An arms dealer, he was responsible for organizing the auction to sell the Clostridium botulinum.
Sadiki Hassan Vachik Mangassarian Egyptian arms dealer.
Blonde Man Bru Muller
Security Guard Nicholas Givanio
  v - e - dNCIS: Los Angeles Season 1
Identity (episode)The Only Easy Day (episode)Predator (episode)Search and Destroy (episode)Killshot (NCIS: Los Angeles episode)Keepin' It Real (episode)Pushback (episode)Ambush (episode)Random on Purpose (episode)Brimstone (episode)Breach (episode)Past Lives (episode)Missing (NCIS: Los Angeles episode)LD50 (episode)The Bank Job (episode)Chinatown (episode)Full Throttle (episode)Blood Brothers (NCIS: Los Angeles Season 1 Episode)Hand-to-Hand (episode)Fame (episode)Found (episode)Hunted (episode)Burned (episode)Callen, G. (episode)
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