When cyanide in a communal water jug lethally poisons a lieutenant and leaves a Navy pilot in serious condition, the NCIS: LA team investigates whether this is an isolated incident or an early test for large-scale water contamination.
Title | NCIS: Los Angeles - Season 4 Episode 20 : Purity |
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Alternative Titles | Navy CIS: L.A., NCIS - Los Angeles, NCIS-LA, NCIS - Los Angeles (2009), NCIS: Λος Άντζελες, NCIS: לוס אנג'לס, NCIS: Legend, NCIS: Undercover, NCIS: OSP, NCIS: LA, Naval Criminal Investigative Service: Los Angeles, NCIS Los Angeles, NCIS LosAngeles |
First Air Date | 2009-09-22 |
Last Air Date | 2023-05-21 |
Number of Episodes | 323 |
Number of Seasons | 14 |
Genres | Action & Adventure, Drama, Crime, Mystery, |
Networks | CBS, |
Casts | Chris O'Donnell, Daniela Ruah, Eric Christian Olsen, Medalion Rahimi, Caleb Castille, Gerald McRaney, LL Cool J |
Plot Keywords | , |
Episodes List
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NCIS: Los Angeles Season 4 :Episode 1 Endgame Endgame
2012-09-25The exploits of the Los Angeles–based Office of Special Projects (OSP), an elite division of the Naval Criminal Investigative Service that...
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NCIS: Los Angeles Season 4 :Episode 2 The Recruit The Recruit
2012-10-02The exploits of the Los Angeles–based Office of Special Projects (OSP), an elite division of the Naval Criminal Investigative Service that...
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NCIS: Los Angeles Season 4 :Episode 3 The Fifth Man The Fifth Man
2012-10-09The exploits of the Los Angeles–based Office of Special Projects (OSP), an elite division of the Naval Criminal Investigative Service that...
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NCIS: Los Angeles Season 4 :Episode 4 Dead Body Politic Dead Body Politic
2012-10-23The exploits of the Los Angeles–based Office of Special Projects (OSP), an elite division of the Naval Criminal Investigative Service that...
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NCIS: Los Angeles Season 4 :Episode 5 Out of the Past (1) Out of the Past (1)
2012-10-30The exploits of the Los Angeles–based Office of Special Projects (OSP), an elite division of the Naval Criminal Investigative Service that...
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NCIS: Los Angeles Season 4 :Episode 6 Rude Awakenings (2) Rude Awakenings (2)
2012-11-13The exploits of the Los Angeles–based Office of Special Projects (OSP), an elite division of the Naval Criminal Investigative Service that...
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NCIS: Los Angeles Season 4 :Episode 7 Skin Deep Skin Deep
2012-11-20The exploits of the Los Angeles–based Office of Special Projects (OSP), an elite division of the Naval Criminal Investigative Service that...
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NCIS: Los Angeles Season 4 :Episode 8 Collateral Damage Collateral Damage
2012-11-27The exploits of the Los Angeles–based Office of Special Projects (OSP), an elite division of the Naval Criminal Investigative Service that...
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NCIS: Los Angeles Season 4 :Episode 9 The Gold Standard The Gold Standard
2012-12-11The exploits of the Los Angeles–based Office of Special Projects (OSP), an elite division of the Naval Criminal Investigative Service that...
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NCIS: Los Angeles Season 4 :Episode 10 Free Ride Free Ride
2012-12-18The exploits of the Los Angeles–based Office of Special Projects (OSP), an elite division of the Naval Criminal Investigative Service that...
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NCIS: Los Angeles Season 4 :Episode 11 Drive Drive
2013-01-08The exploits of the Los Angeles–based Office of Special Projects (OSP), an elite division of the Naval Criminal Investigative Service that...
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NCIS: Los Angeles Season 4 :Episode 12 Paper Soldiers Paper Soldiers
2013-01-15The exploits of the Los Angeles–based Office of Special Projects (OSP), an elite division of the Naval Criminal Investigative Service that...
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NCIS: Los Angeles Season 4 :Episode 13 The Chosen One The Chosen One
2013-01-29The exploits of the Los Angeles–based Office of Special Projects (OSP), an elite division of the Naval Criminal Investigative Service that...
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NCIS: Los Angeles Season 4 :Episode 14 Kill House Kill House
2013-02-05The exploits of the Los Angeles–based Office of Special Projects (OSP), an elite division of the Naval Criminal Investigative Service that...
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NCIS: Los Angeles Season 4 :Episode 15 History History
2013-02-19The exploits of the Los Angeles–based Office of Special Projects (OSP), an elite division of the Naval Criminal Investigative Service that...
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NCIS: Los Angeles Season 4 :Episode 16 Lohkay Lohkay
2013-02-26The exploits of the Los Angeles–based Office of Special Projects (OSP), an elite division of the Naval Criminal Investigative Service that...
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NCIS: Los Angeles Season 4 :Episode 17 Wanted Wanted
2013-03-05The exploits of the Los Angeles–based Office of Special Projects (OSP), an elite division of the Naval Criminal Investigative Service that...
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NCIS: Los Angeles Season 4 :Episode 18 Red (1) Red (1)
2013-03-19The exploits of the Los Angeles–based Office of Special Projects (OSP), an elite division of the Naval Criminal Investigative Service that...
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NCIS: Los Angeles Season 4 :Episode 19 Red (2) Red (2)
2013-03-26The exploits of the Los Angeles–based Office of Special Projects (OSP), an elite division of the Naval Criminal Investigative Service that...
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NCIS: Los Angeles Season 4 :Episode 20 Purity Purity
2013-04-09The exploits of the Los Angeles–based Office of Special Projects (OSP), an elite division of the Naval Criminal Investigative Service that...
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NCIS: Los Angeles Season 4 :Episode 21 Resurrection Resurrection
2013-04-23The exploits of the Los Angeles–based Office of Special Projects (OSP), an elite division of the Naval Criminal Investigative Service that...
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NCIS: Los Angeles Season 4 :Episode 22 Raven & the Swans Raven & the Swans
2013-04-30The exploits of the Los Angeles–based Office of Special Projects (OSP), an elite division of the Naval Criminal Investigative Service that...
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NCIS: Los Angeles Season 4 :Episode 23 Parley Parley
2013-05-07The exploits of the Los Angeles–based Office of Special Projects (OSP), an elite division of the Naval Criminal Investigative Service that...
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NCIS: Los Angeles Season 4 :Episode 24 Descent Descent
2013-05-14The exploits of the Los Angeles–based Office of Special Projects (OSP), an elite division of the Naval Criminal Investigative Service that...