continuous arc starting with episode 14 ("Internal Affairs"). Lauren Holly (Jenny Shepard) left the show after the season finale ("Judgment Day"). Season 6 (2008–09) Rocky Carroll (Leon Vance) was promoted to the main cast starting with the episode "Last Man Standing". "Legend" serves as the two-part backdoor pilot for the spin-off NCIS: Los Angeles. Season 7 (2009–10) Season 8 (2010–11) Season 9 (2011–12) Season 10 (2012–13) Brian Dietzen as M.E. Assistant (Jimmy Palmer) was promoted to the main cast as of this season. Season 11 (2013–14) Cote de Pablo as Special Agent (Ziva David) departed the show after the second episode, "Past, Present, and Future". Emily Wickersham as NSA Analyst and then Probationary Special Agent, (Eleanor Bishop), is introduced in episode nine, "Gut Check", and was later promoted to the main cast in episode twelve, "Kill Chain". "Crescent City" serves as the two-part pilot for NCIS: New Orleans. Season 12 (2014–15) Season 13 (2015–16) Episode 12 begins a crossover event that concludes on NCIS: New Orleans season 2 episode 12. Michael Weatherly (Anthony DiNozzo) departed the series after the season finale "Family First". Season 14 (2016–17) Jennifer Esposito (Alexandra "Alex" Quinn) and Wilmer Valderrama (Nicholas "Nick" Torres) join the cast. Jennifer Esposito departed in the season finale. Duane Henry (MI6 Senior Officer Clayton Reeves) was promoted to the main cast in the fifth episode ("Philly"). Episode 15 begins a crossover event that concludes in NCIS: New Orleans season 3 episode 14. Season 15 (2017–18) Maria Bello (Jacqueline Sloane) made her series debut in episode 4, "Skeleton Crew", before her promotion to series regular in episode 5, "Fake It 'Til You Make It". Pauley Perrette (Abby Sciuto) and Duane Henry (Clayton Reeves) departed the show in episode 22, "Two Steps Back". Season 16 (2018–19) Diona Reasonover (Kasie Hines) was promoted to the main cast. Cote de Pablo (Ziva David) made a surprise appearance in the season finale. Season 17 (2019–20) Cote de Pablo (Ziva David) had a recurring role in the season. On March 13, 2020, CBS announced that the filming of season 17 had been suspended due to the COVID-19 pandemic resulting in only 20 episodes being filmed. Season 18 (2020–21) Maria Bello (Jacqueline Sloane) departed the show in episode 8 "True Believer". Emily Wickersham (Eleanor Bishop) departed the show after the season finale "Rule 91". Season 19 (2021–22) Katrina Law (Jessica Knight) was promoted to the main cast. Gary