NCIS: Los Angeles Episodes

2009, TV Show

NCIS: Los Angeles Season 4 episodes

Descent Season 4, Episode 24

The fourth season ends with a nuclear explosion in the Pacific. The event reignites a search for stolen nuclear weapons, and leads Hetty to shuffle partnerships. She sends Callen and Kensi overseas and leaves Sam and Deeks as a stateside team. read more

Parley Season 4, Episode 23

Deeks goes undercover to obtain information on a former arms dealer who is seeking to get back in business. In the process, Deeks befriends a female source who takes the investigation in a dangerous direction. Meanwhile, Kensi runs surveillance on Deeks and the woman, and confronts some difficult emotions that surface. read more

Raven & the Swans Season 4, Episode 22

Callen questions Hetty's motives when the team is assigned a missing person's case that involves an undercover agent from her past. read more

Resurrection Season 4, Episode 21

Kensi and Deeks are sent to Mexico to investigate the theft of a cartel boss's body, after a DEA special task force brings the ruthless criminal down. Back at home, Callen and Sam look into whether there is a leak in the DEA. read more

Purity Season 4, Episode 20

A Navy lieutenant dies and a pilot is hospitalized after they both drink from a communal water jug that is laced with cyanide. The team investigates to determine whether it is an isolated incident or an early test for large-scale water contamination. read more

Red: Part Two Season 4, Episode 19

Conclusion. Callen and Sam join forces with NCIS: Red, a mobile team of agents who live together and investigate crimes in various locations, to track down a terrorist. read more

Red: Part One Season 4, Episode 18

Part 1 of 2. Callen and Sam fly to Idaho and join forces with NCIS: Red, a mobile team of agents who live together and investigate crimes in various locations, when a murder weapon found there matches one used in a national security case in Los Angeles. read more

Wanted Season 4, Episode 17

Sam's wife is called to resume her former CIA cover when a hit on a Russian mob boss leads the NCIS team to suspect Sidorov. read more

Lokhay Season 4, Episode 16

Sam helps an Afghan elder, who assisted him years ago when he was wounded on a mission, search for the man's missing nephew. read more

History Season 4, Episode 15

The team questions the lone survivor of a former terrorist organization to determine whether the group is re-forming. read more

Kill House Season 4, Episode 14

Callen, Sam, Kensi and Deeks work undercover as an elite tactical force to investigate an ambush that is linked to a drug lord with terrorist connections. read more

The Chosen One Season 4, Episode 13

Callen goes undercover to infiltrate a terrorist group that is recruiting foreign fighters to help carry out an attack in the U.S. read more

Paper Soldiers Season 4, Episode 12

A marine's distraught widow questions the circumstances surrounding his death in combat, so Sam and Callen investigate to determine if there is a cover-up. Meanwhile, the team fears that Hetty is ordering another brutal evaluation when she brings in a psychologist. read more

Drive Season 4, Episode 11

A woman from Deeks' past becomes the target of an international car-stealing operation that is linked to a global terrorist ring. Kensi works undercover at an auto-body shop to investigate the case. read more

Free Ride Season 4, Episode 10

Callen, Sam, Kensi and Deeks spend Christmas aboard an aircraft carrier investigating the death of a fellow NCIS special agent. Back at headquarters, Nell and Eric enjoy the holiday; and Hetty takes a trip. read more

The Gold Standard Season 4, Episode 9

The team investigates a heist executed by gunmen wearing costumes that could directly impact the U.S. economy. Meanwhile, Kensi isn't thrilled when Granger insists that she join him on a case. read more

Collateral Season 4, Episode 8

A retired CIA agent, who was also a millionaire, is murdered. The investigation reveals Hetty may know more about the case than she is willing to acknowledge. read more

Skin Deep Season 4, Episode 7

The team investigates a crime that was posted on the Internet involving a surfer and a dead Navy scientist. read more

Rude Awakenings Season 4, Episode 6

Conclusion. Sam's most private secrets are threatened to be revealed during the continued investigation into the death of a CIA agent who once worked with Sam. read more

Out of the Past Season 4, Episode 5

Part 1 of 2. A CIA agent who once worked with Sam is found dead of an apparent suicide, but Sam suspects foul play. read more

Dead Body Politic Season 4, Episode 4

A senatorial candidate's aide is killed while crossing a street, and the team must determine whether it was an accident or murder. read more

The Fifth Man Season 4, Episode 3

The team investigates a compromised Intel operation after four people connected to the classified project are killed when an explosion occurs at a diner. read more

Recruit Season 4, Episode 2

The body of a retired marine is found at a bomb-making compound in Afghanistan, following a drone strike on the facility. The team investigates to determine why the soldier was there and if he betrayed the U.S. read more

Endgame Season 4, Episode 1

The fourth season begins with Callen being placed on suspension for the public shooting of the Chameleon. Meanwhile, Hetty adjusts to retired life. read more

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Premiered: September 22, 2009, on CBS
Rating: TV-14
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Premise: An "NCIS" spin-off following the undercover agents of the NCIS Office of Special Projects, working from a Spanish mission headquarters in Los Angeles.

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