NCIS: Los Angeles

Callen suspects Hetty of keeping secrets about his past; Joelle surfaces in her quest to capture Katya; NCIS must track down an informant whose life is in danger; Kensi and Deeks work to expand their family.

NCIS takes the case personally when an LAPD officer's father, a beloved elderly Japanese American veteran, is the victim of a vicious hate crime.

Sam and Kilbride clash when a case involving an arms dealer responsible for the slaughter of ATF agents leads them to a well-connected colonel and friend of Kilbride; Kensi and Fatima go under cover to question the arms dealer's girlfriend.

As Callen continues hunting Katya, Kilbride enlists NCIS to help find a truckload of stolen guns; the assignment becomes more challenging when their suspect is found dead.

When an NCIS mission to protect a compromised undercover agent goes completely sideways, the agents are individually interrogated to find out what really happened; Kilbride must make a difficult decision.

Sam negotiates and Rountree goes under cover, when a man takes a busload of hostages and threatens to blow it up unless his daughter's war crimes are posthumously cleared.