凡是喜欢《海军罪案调查处》的朋友对《洛杉矶》其实并不陌生－－该剧的头两集（被命名为《传奇》）本季已经插在《海军罪案调查处》正剧中播出了。《洛杉矶》主要讲述了海军罪案调查处专门从事秘密监视任务的分支部门OSP（特别项目办公室，Office of Special Project）打击高科技犯罪、逮捕最危险的罪犯并维护国家安全的故事。
加入该小组的成员都是训练有素的精英特工，他们运用尖端科技手段和各种各样的假身份秘密开展工作。他们潜藏得很深，有时连家人也不知道他们的真实身份。为了完成任务，他们不顾个人安危，每天都游走于生与死的边缘。
代号G的Callen特工（Chris O'Donnell扮演）是条「变色龙」。为了打入犯罪组织内部，他可以把自己改变成任何「需要」的形象。他的搭挡Sam Hanna特工（LL COOL J扮演）是前海豹突击队成员，曾在阿富汗和伊拉克战场上接受最残酷的实战考验。Hanna还是个监视专家，善于使用各种尖端设备。当执行外勤任务的队友需要帮助的时候，他总是能在第一时间提供决定生死的重要情报。Callen和Hanna的直接上司是OSP办公室主任Lara Macy特工（Louise Lombard），她负责计划任务的制定、调配和监控，并负责在关键时刻作出关键决定。Kensi Lo特工（Daniela Ruah扮演）奉命协助OSP开展行动。她是一位前海军陆战队员的女儿，聪明绝顶，富有激情。临床心理学专家Nate Getz（Peter Cambor扮演）则相当于小组中的「智库」，他不仅能轻易攻破任何人的心理防线，而且拥有敏锐的观察力和一流的判断力，能在任务前、任务中、任务后的不同阶段快速判别嫌疑人的精神状态和心理状态。
在危机四伏的高端犯罪领域，OSP的成员唯有依靠彼此的帮助和过硬的罪案调查技巧，才能取得一个又一个胜利。
Endgame (集 1) 8.5
编剧: Shane Brennan
播出日期: 2012-09-25
运行时间: 44 min
概述: Following Callen’s public shooting of the Chameleon, all is not well with the NCIS: LA team, as Callen is placed on suspension and Hetty adjusts to retired life.
Recruit (集 2) 8.3
编剧: R. Scott Gemmill
播出日期: 2012-10-02
运行时间: 44 min
概述: 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 and whether or not he betrayed the country he fought for.
The Fifth Man (集 3) 8.7
播出日期: 2012-10-09
运行时间: 43 min
概述: The NCIS: LA team investigate a compromised intel operation after four people connected to the classified project are killed at a diner explosion. As Deeks and Kensi are on the trail of those involved, they learn that a wayward teenage girl might be related and Kensi can’t help but be empathetic to her situation.
Dead Body Politic (集 4) 7.7
播出日期: 2012-10-23
运行时间: 43 min
概述: The NCIS: LA team investigates the tragic death of a U.S. senatorial candidate’s staffer who is run over crossing the street. The high-profile case becomes a matter of national security as the agents must determine whether it is an isolated tragic incident or a politically connected plot that might put others in danger.
Out of the Past (1) (集 5) 8.0
编剧: Frank Military
播出日期: 2012-10-30
运行时间: 44 min
概述: 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. Meanwhile, Deeks finds his inner “dog whisperer” with Kensi as the two go undercover and enter a dog show with a prized poodle.
Rude Awakenings (2) (集 6) 8.0
播出日期: 2012-11-13
运行时间: 43 min
概述: The NCIS: LA team continues their investigation behind the death of a CIA agent that leads to a dangerous ring of Russian super agents. In a race against time, Hanna risks having a secret exposed.
Skin Deep (集 7) 6.7
播出日期: 2012-11-20
运行时间: 43 min
概述: The NCIS: LA team heads to the beach to question the possible link between a surfer, an Internet video and a dead Naval tech scientist. Meanwhile, as Callen and Hanna investigate the victim’s intelligence connections, Deeks and Kensi go undercover to catch their suspects and some waves.
Collateral (集 8) 8.3
播出日期: 2012-11-27
运行时间: 43 min
概述: The NCIS: LA team questions the motive behind the murder of a retired CIA agent turned millionaire and in the process also questions what Hetty knows about the case.
The Gold Standard (集 9) 8.3
播出日期: 2012-12-11
运行时间: 42 min
概述: The NCIS: Los Angeles team investigates the strange and brazen heist executed by gunmen in costumes that could directly impact the U.S. economy. Meanwhile, as Deeks testifies on a case, Granger insists on partnering up with a very reluctant Kensi.
Free Ride (集 10) 8.0
播出日期: 2012-12-18
运行时间: 43 min
概述: Callen, Sam, Kensi and Deeks spend Christmas aboard an aircraft carrier investigating the death of a fellow NCIS special agent. Meanwhile, Nell and Eric make the most of the holidays back at headquarters and Hetty takes a trip.
Drive (集 11) 6.7
播出日期: 2013-01-08
运行时间: 43 min
概述: 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. Meanwhile, the NCIS: LA team tackles the large-scale stolen car operation from the inside when Kensi goes undercover in an auto body shop.
Paper Soldiers (集 12) 6.7
播出日期: 2013-01-15
运行时间: 43 min
概述: A distraught widow is suspicious of the circumstances surrounding her Marine husband’s last battle and Sam and Callen help to determine if there has been a cover-up. Meanwhile, Hetty summons Operational Psychologist Nate Getz to be her “pawn” and the rest of the NCIS: LA sense another evaluation on the horizon.
The Chosen One (集 13) 9.0
播出日期: 2013-01-29
运行时间: 44 min
概述: Callen goes undercover to infiltrate a network of Chechen terrorists who are recruiting foreign fighters to join their cause and planning their next attack in the U.S.
Kill House (集 14) 8.3
播出日期: 2013-02-05
运行时间: 43 min
概述: 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.
History (集 15) 6.3
播出日期: 2013-02-19
运行时间: 43 min
概述: An NCIS: LA investigation leads the team to question a lone survivor of a former terrorist organization, while Kensi and Deeks follow the trail into the woods
Lohkay (集 16) 6.7
播出日期: 2013-02-26
运行时间: 43 min
概述: Callen is concerned that Sam might be too invested after he takes on a missing persons case for an Afghani elder who helped him years ago when he was wounded on a mission.
Wanted (集 17) 5.5
播出日期: 2013-03-05
运行时间: 43 min
概述: 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 nuke.
Red (1) (集 18) 9.3
播出日期: 2013-03-19
运行时间: 43 min
概述: 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.
Red (2) (集 19) 9.3
播出日期: 2013-03-26
运行时间: 43 min
概述: While the LA team chases leads digitally and locally, the NCIS: Red team travels in their mobile trucks, nicknamed "Laverne and Shirley", in a race to track down a cunning terrorist before he disappears.
Purity (集 20) 7.7
播出日期: 2013-04-09
运行时间: 44 min
概述: 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.
Resurrection (集 21) 8.0
播出日期: 2013-04-23
运行时间: 43 min
概述: A body is stolen after a special task force successfully takes down an infamous cartel boss, leaving the NCIS: LA team to investigate the leak and track down the missing body.
Raven & the Swans (集 22) 8.3
播出日期: 2013-04-30
运行时间: 42 min
概述: Callen questions Hetty’s motivations when a bizarre case involving a mysterious woman is revealed to be an undercover agent from her past.
Parley (集 23) 7.0
播出日期: 2013-05-07
运行时间: 42 min
概述: Deeks goes undercover to obtain information about an infamous arms dealer looking to get back in the business, but the woman he befriends leads the operation in a dangerous directon. Meanwhile, Kensi confronts new emotions as she runs surveillance on Deeks and his female source.
Descent (集 24) 6.2
播出日期: 2013-05-14
运行时间: 44 min
概述: A nuclear explosion in the Pacific reignites the search for stolen nuclear weapons and prompts Hetty to shuffle the NCIS: LA partnerships, sending Callen and Kensi overseas and leaving Sam and Deeks teamed up state side.
