Episodes: Series - NCIS: Los Angeles S13 - 2021

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Callen believes Hetty is hiding something from him regarding his background. Deeks and Kensi strive to grow their family.

When a brutal hate crime victimizes the father of an LAPD cop, the NCIS handles the case.

Sam and Kilbride get into a fight after they follow a case involving a weapons dealer who killed ATF agents, leading them to a well-connected colonel who is Kilbride's friend.

Kilbride enlists the assistance of the NCIS in order to locate a cargo of stolen firearms, while Callen pursues Katya.

An NCIS assignment intended to safeguard a compromised covert agent utterly goes awry. Kilbride is faced with a tough choice.

When a man kidnaps several bus passengers and threatens to bomb it, Rountree goes undercover.

NCIS looks into a Navy intelligence officer's suspected suicide.

When a mysterious militia organization attacks and abducts Kensi, the NCIS team races to locate her.

The U.S. ambassador's daughter goes missing, and the NCIS team helps her look for her.

After a civilian scientist who was collaborating with the Marines is murdered and her invention is taken, the team must work quickly to locate the lost invention and the criminal.

Kensi and Deeks go in search of the mother when a baby is discovered on a Navy ship.

An unknown aircraft that enters American airspace and collides with a Navy plane is investigated by the NCIS team.

When the partner of Justice Department Agent Lance Hamilton dies, Sam takes charge of the case.

To determine who is responsible for some stolen items, NCIS investigates the theft of a luxurious arts storage facility by posing as possible buyers on the black market.

In an undoubted instance of racial profiling, the police violently arrest Rountree and his younger sister.

The abduction of a military working dog is investigated by the NCIS. In order to provide for his father, who suffers from Alzheimer's, Sam seeks to sell his boat.

Naval Intelligence Officer Akhil Ali is assisted by the NCIS in locating a fellow officer who disappeared while enlisting foreign assets as intelligence sources.

Sam thinks selling the boat over, while NCIS investigates the homicide of a woman who worked in the Navy's missile defense program.

DEA Agent Talia Del Campo collaborates with the NCIS team to locate a missing informant who was scheduled to provide testimony against gun manufacturers who marketed drug traffickers.

Two men are killed by their own explosives while trying to get into a military base, leading to an investigation by the NCIS.

Following Callen's deception by Katya, who organized a weapons transaction using Sam's deepfake, the NCIS team is forced to locate him as soon as possible.

After realizing that they are the victims of tricks, the team persists in their search for Callen. Kensi and Deeks are informed of the promising developments regarding the adoption.