Are you a TV Fanatic?
Sign up for our daily newsletter to receive personalized television news for free!
Watch NCIS: Los Angeles Season 4 full episodes online, free and paid options via our partners and affiliates.
A devastating event ignites the rush to find stolen nuclear weapons and has Hetty making changes in the usual partnerships on the season 4 finale of NCIS: Los Angeles.
Kensi's feelings become uncomfortable when she's forced to watch Deeks undercover with a female asset in a dangerous situation on NCIS: Los Angeles.
Callen wonders about Hetty's motivations when she assigns the team a case involving a missing undercover operative from the past on NCIS: Los Angeles.
When a cartel boss' body goes missing, Kenzi and Deeks head down to Mexico to investigate while Callen and Sam try to figure out if there's a leak in the DEA on NCIS: Los Angeles.
The team must figure out if cyanide put in a water jug is an isolated incident or a test for a much larger attack on NCIS: Los Angeles.
Part II of the NCIS: LA event introducing us to Team Red.
"Red" is the episode that will potentially launch the NCIS: Los Angeles spinoff. It refers to the new elite team we will meet.
Sam fears for his family's safety when his wife is called to resume a former CIA cover after a case suggests ties to the infamous Sidorov and his stolen nukes.
When an Afghan elder's nephew is missing, Sam offers to help on NCIS: Los Angeles.
The team must interrogate a lone survivor of a terrorist group to find out if the organizations' future plans on NCIS: Los Angeles.
Callen, Sam, Kensi and Deeks go undercover as an elite tactical force in order to investigate an ambush tied to a cartel kingpin with terrorist connections.
Callen goes undercover to fight a terrorist group before they can attack on this episode of NCIS: Los Angeles.
The 12th episode of NCIS: Los Angeles' fourth season. Synopsis and recap to come soon!
A former defendant of Deeks is targeted for discovering information that could dismantle a lucrative car shipping operation with links to a global terrorist ring.
The team spends the holiday on an aircraft carrier while they investigate the death of another NCIS special agent on NCIS: Los Angeles.
The team investigates the strange and brazen heist executed by gunmen in costumes that could directly impact the U.S. economy.
The eighth episode of NCIS: LA Season 4. Synopsis and recap to come soon!
The seventh episode of NCIS: LA Season 4. Synopsis and recap to come soon!
The sixth episode of NCIS: LA Season 4. Synopsis and recap to come soon!
When a CIA agent who worked with Sam Hanna over eight years ago seeks his help and is soon found dead of an apparent suicide, Hanna and Callen suspect foul play and a bigger conspiracy.
The NCIS: LA team investigates the tragic death of a U.S. senatorial candidate's staffer who is run over crossing the street.
The NCIS: LA team investigate a compromised intel operation after four people connected to the classified project are killed at a diner explosion.
A drone strike on a bomb-making compound in Afghanistan reveals the body of a recently retired Marine, leaving the NCIS: LA team to investigate why the Marine returned to Afghanistan.
Following Callen's public shooting of the Chameleon, he is placed on suspension while Hetty adjusts to retired life on the Season 4 finale.