NCIS: Los Angeles
Season 4 Episode 20 - Purity
7.5 ?
2009
Action & Adventure, Drama, Crime
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.
Episodes in Season 4
1
Endgame
44 min
2
Recruit
44 min
3
The Fifth Man
43 min
4
Dead Body Politic
43 min
5
Out of the Past (1)
44 min
6
Rude Awakenings (2)
43 min
7
Skin Deep
43 min
8
Collateral
43 min
9
The Gold Standard
42 min
10
Free Ride
43 min
11
Drive
43 min
12
Paper Soldiers
43 min
13
The Chosen One
44 min
14
Kill House
43 min
15
History
43 min
16
Lohkay
43 min
17
Wanted
43 min
18
Red (1)
43 min
19
Red (2)
43 min
20
Purity
44 min
NOW PLAYING
21
Resurrection
43 min
22
Raven & the Swans
42 min
23
Parley
42 min
24
Descent
44 min
