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, NCIS handles the case personally.

Sam and Kilbride get into a fight after they follow a case involving a weapons dealer who killed ATF agents 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 as 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 captives and makes bomb threats, 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 find her.

The team must work quickly to locate the lost technology and the criminal when a civilian scientist who was collaborating with the Marines is murdered and her sophisticated radar technology is taken.

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 fellow Justice Department agent Lance Hamilton dies, Sam takes charge of the case.

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

Police conduct an aggressive arrest of Rountree and his younger sister, which is undoubtedly an instance of racial profiling.

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

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

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

A 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 promoted drug traffickers.

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

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

While realizing that Callen is a victim of fraud, the team persists in their search for him. Kensi and Deeks are informed of the promising developments regarding the adoption.