Set in the high stakes world of the Office of Special Projects, this division of NCIS is charged with apprehending dangerous and elusive criminals that pose a threat to America's security.
By assuming false identities and utilizing the most advanced technology, this team of highly trained agents goes deep undercover, putting their lives on the line in the field to bring down their targets.
In the Season 9 premiere, "Party Crashers": after Hetty turns in retirement papers and then disappears, Executive Assistant Director Shay Mosley (Nia Long) arrives in Los Angeles to oversee the team and immediately makes staffing changes.
Also, still mourning the death of his wife and living in a trailer on the beach, Sam is adamant that Callen find a new partner.
NCIS: Los Angeles is produced by CBS Television Studios.