A team of special agents must investigate any crime with pieces of evidence connected to Navy and Marine Corps personnel, regardles of rank or position.

Originally broadcast on CBS Television networks. Season 1 special features: Commentary by co-creator/executive producer/writer/director Donald P. Bellesario on episode 1 "Yankee white"; "N.C.I.S.: creating season 1" featurette; "N.C.I.S.: building the team" featurette; "N.C.I.S.: defining the look" featurette. Season 2 special features : "Investigating season 2" featurette; "What's new in season 2" featurette; "The real N.C.I.S." featurette; "Lab tour with Pauley Perrette" featurette. Season 3 special effects : Disc 1: Kill Ari (part 1) commentary by Donald P. Bellisario ; Disc 3: Frame-up commentary by Pauley Perrette and Michael Weatherly; Boxed in commentary by Avery Drewe and David Bellisario; The real N.C.I.S. declassified; Hit the head montage ; Disc 4: The round table ; Disc 5: The women of N.C.I.S. ; Disc 6: Bloodbath commentary by Pauley Perrette and Michael Weatherly; N.C.I.S. season of change. Season 4 special features : Cast and crew commentaries on select episodes ; Cast roundtable (parts 1 &2) ; Ducky's world ; Behind the set: Production design of NCIS ; Dressed to kill: Dressing the sets of NCIS ; Prop master ; Picture perfect: The looks of NCIS ; Season of secrets. Special features season 7 : 'The future is now'; cast roundtable; cast & crew: year in review; 'Give me two steps'; graphics; 150th episode; commentary with Mark Harmon, Arvin Brown & Gary Glasberg; music and sound; Home sweet home; commentary with Robert Wagner & Michael Weatherly. Season 5 special features Disc one: "Bury your dead" commentary with Michael Weatherly and Patricia H. O'Hara ; Disc two: "Requiem" commentary with Mark Harmon & Shane Brennan; "Requiem" revisited ; Disc four: "Dog tags" commentary with David McCallum & Brian Dietzen; "Recoil" commentary with Cote de Pablo and James Whitmore, Jr. ; Disc five: N.C.I.S. season 5: stem to stern; The dressing room: the costumes and wardrobe of N.C.I.S.; N.C.I.S. on location; From Pauley to Abby: hairspray, lipstick and tattoos. Season 6 special features : Cast and crew coummentaries on selected episodes ; "Bodies of work" actor Brien Deitzen gives a tour of WM Creations, the company that created the 'bodies' used on NCIS ; "Fear" a DVD exclusive - An acoustic version of Pauley Perrette's song, 'Fear' --'Starting with a bang' : A look at the season's opening arc -- 'Horsin' around" featurette based on 'South by southwest' episode -- 'Season six : cruising along' : Cast and crew reflect on some of the major events of the season ; 'Six degrees of conversation' : The cast takls about season six. Season 9 special features : Nine is fine ; The finish line; Casting off ; Episode two hundred ; NCIS season 9 cast roundtable; Psyched up: Jamie Lee Curtis on set ; Cast & crew audio commentaries on selected episodes ; Deleted scene. Season 10 special features: Mr. Carroll goes to Washington; A death in the family; DiNozzo's digs; You wear it well; 10 items or less; X marks the spot; 10 years aft; Inside NCIS; Commentaries on select episodes; Deleted scenes. Season 8 special features : "I have a question for ... ", questions from the fans ; Technically speaking, a conversation with technical advisor Leon Carroll, Jr. ; Practical magic : turning back time on director Vance ; Lights! Camera! Weatherly! Michael Weatherly directs an episode ; Grab your gear: a look at season 8 ; very special effects ; Murder, they wrote the writers talk about NCIS ; cast & crew commentaries on selected episodes. Season 11 special features : Special features: Celebrating 250 ; NCIS in New Orleans; Game change ; Remembering Jackson Gibbs : a tribute to Ralph Waite ; On the record ; Finding Ellie Bishop ; In the stills of the night ; Background check ; Joe Spano: Fornell for real ; Audio commentaries on select episodes. Special features : Pre-flight jitters: shooting on location ; Bad to the bone ; Rocky Carroll: director ; Inside season 12 ; Table for ten ; #1 drama in the world ; audio commentaries on select episodes ; deleted/extended scenes. Originally broadcast as season 9 of the television series 2011-2012. Special features: Nine is fine; the finish line; casting off; episode two hundred; NCIS season 9 cast roundtable; psyched up: Jamie Lee Curtis on set; audio commentaries; deleted scenes. Originally broadcast as season 10 of the television series 2012-2013. Special features: Mr. Carroll goes to Washington; a death in the family; DiNozzo's digs; you wear it well; 10 items or less; x marks the spot; 10 years aft; inside NCIS; commentaries on select episodes; deleted scenes.

Season 1 :Episodes : Yankee white -- Hung out to dry -- Sea dog -- The immortals -- The curse -- High seas -- Sub rosa -- Minimum security -- Marine down -- Left for dead -- Eye spy -- My other left foot -- One shot, one kill -- The good Samaritan -- Enigma -- Episode 16: Bête noire -- The truth is out there -- UnSEALed -- Dead man talking -- Missing -- Split decision -- A weak link -- Reveille. Season 2 : Disc 1. See no evil -- The good wives club -- Vanished -- Lt. Jane Doe -- Disc 2. The boneyard -- Terminal leave -- Call of silence -- Heart break -- Disc 3. Forced entry -- Chained -- Black water -- Doppelgänger -- Disc 4. The meat puzzle -- Witness -- Caught on tape -- Pop life -- Disc 5. An eye for an eye -- Bikini wax -- Conspiracy theory -- Red cell -- Disc 6. Hometown hero -- SWAK -- Twilight. Season 3 : Disc 1 : Kill Ari (part 1) -- Kill Ari (part 2) -- Mind games -- Silver war -- Disc 2 : Switch -- The voyeur's web -- Honor code -- Under covers -- Disc 3 : Frame-up -- Probie -- Model behavior -- Boxed in -- Disc 4 : Deception -- Light sleeper -- Head case -- Family secret -- Disc 5 : Ravenous -- Bait -- Iced -- Untouchable -- Disc 6 : Bloodbath -- Jeopardy -- Hiatus (part 1) -- Hiatus (part 2). Season 4 : Shalom -- Escaped -- Singled out -- Faking it -- Dead and unburied -- Witch hunt -- Sandblast -- Once a hero -- Twisted sister -- Smoked -- Driven -- Suspicion -- Sharif returns -- Blowback -- Friends & lovers -- Dead man walking -- Skeletons -- Iceman -- Grace period -- Cover story -- Brothers in arms -- In the dark -- Trojan horse -- Angel of death. Season 5 : Disc 1: Bury your dead -- Family -- Ex-file -- Identity crisis -- Disc two : Leap of faith -- Chimera -- Requiem -- Designated target -- disc three : Lost & found -- Corporal punishment -- Tribes -- Stakeout -- disc four : Dog tags -- Internal affairs -- In the zone -- Recoil -- disc five : About face -- Judgment day -- (parts 1 & 2). Season 6 : Disc 1 : Last man standing -- Agent afloat -- Capitol offense -- Heartland -- disc 2 : Nine lives -- Murder 2.0 -- Collateral damage -- Cloak -- disc 3 : Dagger -- Road kill -- Silent night -- Caged -- disc 4 : Broken bird -- Love & war -- Deliverence -- Bounce -- disc 5 : South by southwest -- Knockout -- Hide and seek -- Dead reckoning -- Toxic -- disc 6 : Legend, part 1 -- Legend, part 2 -- Semper Fidelis -- Aliyah. Season 7 : Disc 1 : Truth or consequences ; -- Reunion ; -- Inside man ; -- Good cop, bad cop -- disc 2 : Code of conduct ; -- Outlaws and in-laws ; -- Endgame ; -- Power down -- disc 3 : Child's play ; -- Faith ; -- Ignition ; -- Flesh and blood -- disc 4 : -- Jet lag ; -- Masquerade ; -- Jack-knife ; -- Mother's Day -- disc 5 : Double identity ; -- Jurisdiction ; -- Guilty pleasure ; -- Moonlighting ; -- Obsession -- disc 6 : Borderland ; -- Patriot down ; -- Rule fifty-one. Season 8 : Disc 1 : Spider and the fly -- Worst nightmare -- Short fuse -- Royals and loyals -- Special feature -- disc 2 : Dead air -- Cracked -- Broken arrow -- Enemies foreign -- Special features -- disc 3 : Enemies domestic -- False witness -- Ships in the night -- Recruited -- disc 4 : Freedom -- A man wals into a bar -- Defiance -- Kill screen -- disc 5 : One last score -- Out of the frying pan -- Tell-all -- Two-faced -- Dead reflection -- disc 6 : Baltimore -- Swan song -- Pyramid. Season 9 : Disc 1 : Nature of the beast -- Restless -- The Penelope papers -- Enemy on the hill -- disc 2 : Safe harbor -- Thirst -- Devil's triangle -- Engaged (part 1) -- disc 3 : Engaged (part 2) -- Sins of the father -- Newborn king -- Housekeeping -- disc 4 : A desperate man -- Life before his eyes -- Secrets -- Psych out -- disc 5 : Need to know -- The tell -- The good son -- The missionary position -- Rekindled -- disc 6. Playing with fire -- Up in smoke -- Till death do us part. Season 10 : Disc 1 : Extreme prejudice -- Recovery -- Phoenix -- Lost at sea -- disc 2 : The namesake -- Shell shock (part 1) -- Shell shock (part 2) -- Gone -- disc 3 : Devil's trifecta -- You better watch out -- Shabbat shalom -- Shiva -- disc 4 : Hit and run -- Canary -- Hereafter -- Detour -- disc 5 : Prime suspect -- Seek -- Squall -- Chasing ghosts -- Berlin -- disc 6 : Revenge -- Double blind -- Damned if you do. Season 11 : Disc 1 : Whiskey tango foxtrot -- Past, present, and future -- Under the radar -- Anonymous was a woman -- disc 2 : Once a crook -- Oil & water -- Better angels -- Alibi -- disc 3 : Gut check -- Devil's triad -- Homesick -- Kill chain -- disc 4 : Double back -- Monsters and men -- Bulletproof -- Dressed to kill -- Special feature -- disc 5 : Rock and a hard place -- Crescent City (part I) -- Crescent City (part II) -- Page not found -- Alleged -- Special feature -- disc 6 : Shooter -- The Admiral's daughter -- Honor thy father -- Special features. Season 12 : Disc 1 : Twenty klicks -- Kill the messenger -- So it goes -- Choke hold -- disc 2 : The San Dominick -- Parental guidance suggested -- The searchers -- Semper fortis -- disc 3 : Grounded -- House rules -- Check -- The enemy within -- disc 4 : We build, we figt -- Cadence -- Cabin fever -- Blast from the past -- disc 5 : The artful dodger -- Status update -- Patience -- No good deed -- disc 6 : Lost in translation -- Troll -- The lost boys -- Neverland.