The TV show NCIS: Los Angeles premiered on CBS, introducing viewers to the team investigating crimes related to the Naval Criminal Investigative Service in Los Angeles.
CBS renewed NCIS: Los Angeles for a second season due to its strong viewership and positive reception.
NCIS: Los Angeles had its first crossover event with the original NCIS series, increasing the show's popularity and expanding the universe.
Eric Christian Olsen, playing Marty Deeks, was promoted to series regular due to his popularity with fans.
CBS announced that NCIS: Los Angeles would be concluding with its 14th season, marking the end of the series.
The establishment of the elite undercover division of NCIS in Los Angeles, focused on tackling high-risk cases involving national security.
Sam Hanna, a former Navy SEAL, joins the Office of Special Projects, showcasing his tactical expertise and intelligence skills.
Kensi Blye, a skilled NCIS Special Agent, joins the OSP team bringing her marksmanship and investigative talents.
Operations Manager and Supervisory Special Agent Hetty Lange begins leading the OSP team, offering guidance and strategic leadership.
Special Agents Sam Hanna and G. Callen undertake covert operations in Los Angeles and beyond to dismantle terrorist threats and criminal organizations.
Callen's mysterious background and search for his biological family are explored, revealing depth to his character and motivations.
Kensi Blye and LAPD Detective Marty Deeks form a professional and personal partnership, balancing NCIS and LAPD collaboration.
The team pursues a dangerous terrorist cell threatening national security at home and abroad.
Details about Kensi's family and her late father come to light, impacting her motivations and cases.
Marty Deeks transitions officially to liaison officer between LAPD and NCIS, deepening his role in the team.
Revealing Hetty Lange's extensive network and past espionage experience, enhancing understanding of her enigmatic character.
A high-stakes operation to prevent arms trade that could endanger global security.
Nell Jones joins the OSP team as a technical analyst, enhancing the team's cyber and intelligence capabilities.
Kensi Blye and Marty Deeks become engaged, marking a significant personal milestone.
Sam Hanna confronts dangers stemming from his prior Navy SEAL assignments, testing his loyalty and skills.
Callen’s pursuit of information about his biological father leads to uncovering a secret past.
Hetty Lange leaves the team under mysterious circumstances, leading to leadership changes in the division.
The OSP team leads a mission preventing a massive cyber attack on US military systems.
Marty Deeks and Kensi Blye marry, solidifying their long-standing relationship.
