Original air date: 10/02/2012 Runtime: 43:37 min. 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.
Original air date: 10/09/2012 Runtime: 43:20 min. The NCIS: LA team investigates 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. The real-life mothers of stars Chris O'Donnell, LL COOL J, Daniela Ruah and Eric Christian Olsen will appear in the episode alongside their children.
Original air date: 10/23/2012 Runtime: 42:29 min. 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.
Original air date: 10/30/2012 Runtime: 43:28 min. 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.
Original air date: 11/20/2012 Runtime: 42:50 min. 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.
Original air date: 12/11/2012 Runtime: 42:19 min. 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.
Original air date: 01/08/2013 Runtime: 42:43 min. 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.
Original air date: 01/15/2013 Runtime: 43:17 min. 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 team sense another evaluation on the horizon. Peter Cambor guest stars.
Original air date: 03/19/2013 Runtime: 43:11 min. When a murder weapon in Idaho matches the one used in a national security case in L.A., Callen and Sam fly to the crime scene to join NCIS: Red, a mobile team of agents who live and work together as they solve crimes in various locations. Kim Raver guest stars as NCIS Special Agent Paris Summerskill, John Corbett as Roy Haines and Scott Grimes as NCIS Special Agent Dave Flynn.
Original air date: 03/26/2013 Runtime: 43:29 min. 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, on the conclusion of a two-part episode of NCIS: LOS ANGELES. Kim Raver guest stars as NCIS Special Agent Paris Summerskill, John Corbett as Roy Haines and Scott Grimes as NCIS Special Agent Dave Flynn.
Original air date: 04/09/2013 Runtime: 43:32 min. 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.
Original air date: 05/07/2013 Runtime: 41:53 min. 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.
Original air date: 05/14/2013 Runtime: 43:34 min. An explosion in the desert rekindles the search for stolen nuclear weapons and prompts Hetty to shuffle the NCIS: LA partnerships, sending Callen and Kensi overseas and Sam and Deeks teamed up stateside. Aunjanue Ellis guest stars as Michelle Hanna, Christopher Lambert guest stars as Marcel Janvier and Timothy V. Murphy guest stars as Isaak Sidorov.