NCIS Season 12 premiered on September 23, 2014 at 8:00 pm EST in the United States and concluded on May 12, 2015.
- Season Twelve Cast
|Leroy Jethro Gibbs||Mark Harmon||Special Agent in charge of the Major Case Response Team, NCIS/Senior Special Agent|
|Anthony DiNozzo||Michael Weatherly||Senior Special Agent, MCRT, NCIS|
|Timothy McGee||Sean Murray||Special Agent, MCRT, NCIS|
|Abigail Sciuto||Pauley Perrette||Chief Forensic Specialist, NCIS|
|James Palmer||Brian Dietzen||Assistant Medical Examiner|
|Donald Mallard||David McCallum||Chief Medical Examiner, NCIS|
|Leon Vance||Rocky Carroll||Director of NCIS.|
|Eleanor Bishop||Emily Wickersham||Probationary Special Agent, MCRT, NCIS|
- No cast changes took place.
|259||1||Twenty Klicks (episode)||September 23, 2014.||Gibbs and McGee travel to Russia to escort an NCIS computer engineer back to America but things take a turn when their helicopter is downed by a missile, forcing Gibbs and McGee into a fight for their lives against a Russian mercenary group who want them dead. This episode also marked the debut appearance of recurring character, terrorist Sergei Mishnev.|
|260||2||Kill The Messenger (episode)||September 30, 2014.||The NCIS team investigate the death of a Navy Lieutenant and must determine if his death was a part of a recent stream of muggings in the area or a targeted hit to keep intel secret.|
|261||3||So It Goes (episode)||October 7, 2014.||The NCIS team investigate a death and Ducky discovers a connection to his childhood, prompting Ducky and Bishop to travel to London as they seek to determine what happened while back in D.C., the rest of the team tackle the case.|
|262||4||Choke Hold (episode)||October 14, 2014.||SECNAV assigns the NCIS team to a joint terrorist task force after a research scientist working for the Navy dies from wounds sustained from being garroted with Gibbs telling DiNozzo to run interference with the leader of the task force, FBI Agent Leia Pendergast.|
|263||5||The San Dominick (episode)||October 21, 2014.||Gibbs investigates when the body of a man is found overboard with the NCIS team and CGIS agent Abigail Borin discovering that the dead man was a member of a cargo ship 60 miles away. Upon boarding the ship to get answers as to what happened, Gibbs finds himself becoming a hostage as the ship has been taken over by pirates but all is not what it seems...|
|264||6||Parental Guidance Suggested (episode)||October 28, 2014.||A woman whose Navy SEAL husband's name is on a jihadist hit list has been murdered, and the team must figure out if her death was the result of a terrorist attack or something much more sinister. One of Tony's old friends, ATF Special Agent Zoe Keates, is introduced.|
|265||7||The Searchers (episode)||November 11, 2014.||NCIS investigate the death of a retired Master Sergeant and discover a fraudulent charity that preys on those searching for missing military personnel while Bishop agonizes over her probationary exam results.|
|266||8||Semper Fortis (episode)||November 18, 2014.||Gibbs looks for a way to clear a Navy Hospital Corpsman of charges after she has illegally helped the victims of a hit and run.|
|267||9||Grounded (episode)||November 25, 2014.||While weather worsens outdoors, DiNozzo, Bishop, and her husband, Jake, are stuck at Dulles airport working on a case involving a terrorist threat.|
|268||10||House Rules (episode)||December 16, 2014.||The NCIS team consult with three cyber-terrorists they imprisoned after a citywide Internet shutdown the week before Christmas. Meanwhile, McGee reflects on the case and Gibbs' infamous rules as he writes a heartfelt letter to his father.|
|269||11||Check (episode)||January 6, 2015.||As the team investigate some crime scenes that appear to be copycat of previous crime scenes, Gibbs finds himself being cornered when two of his ex-wives return, only for tragedy to strike when someone close to Gibbs is brutally murdered.|
|270||12||The Enemy Within (episode)||January 13, 2015.||The NCIS team searches for a home-grown terrorist after a rescue mission in Syria reveals an American was involved in the capture of a social worker. Meanwhile, McGee and Bishop question DiNozzo’s unusual behavior.|
|271||13||We Build, We Fight (episode)||February 3, 2015.||Gibbs and the team investigate when a Navy lieutenant who is set to be the first openly gay servicemember to receive the Medal of Honor is murdered. Also, as his wife’s due date approaches, Palmer prepares for fatherhood with a NCIS baby shower.|
|272||14||Cadence (episode)||February 10, 2015.||DiNozzo returns to the military academy he attended as a teen after a murdered Marine, who was an alumnus of the school, is found clutching the photo of a current student. Meanwhile, Bishop and her husband invite Gibbs and the team for a special dinner.|
|273||15||Cabin Fever (episode)||February 17, 2015.||The NCIS team suspects Gibbs's arch-nemesis is behind an explosion at a summit for global terror event, but Gibbs elects to sit out the investigation in order to help a grief-stricken Fornell, whose life is on the verge of imploding following his wife's murder.|
|274||16||Blast from the Past (episode)||February 24, 2015.||A covert identity created for one of Gibbs' undercover cases from 20 years ago resurfaces when a murder victim is found living under the alias.|
|275||17||The Artful Dodger (episode)||March 10, 2015.||DiNozzo Senior comes to visit Tony as a surprise, but his knowledge and contacts within the black market art world will greatly help the team as they work to solve a murder involving a rare painting.|
|276||18||Status Update (episode)||March 24, 2015.||After the body of a thief is found in a Marine's house, NCIS discovers the calling card of a terror group Delilah and the Department of Defense have been tracking.|
|277||19||Patience (episode)||March 31, 2015.||The murder of a petty officer sparks a lead in a 40 year old airport bombing cold case that Gibbs and DiNozzo have been assigned to for the past two years while McGee is jealous that he was not previously briefed on the cold case.|
|278||20||No Good Deed (episode)||April 7, 2015.||DiNozzo is partnered with his girlfriend ATF Special Agent Zoé Keates after evidence reveals that the murder weapon in an NCIS case was originally purchased for the controversial ATF sting operation ‘Operation Fast and Furious.’ Also, Anthony DiNozzo Sr. returns to town for a special dinner to meet his son’s girlfriend.|
|279||21||Lost in Translation (episode)||April 14, 2015.||Gibbs and Bishop go to Afghanistan after the murder of a marine in Washington, D.C., is linked to a terror group that is holding another marine hostage overseas while DiNozzo gets upset when he learns that McGee is the new face of NCIS on recruitment brochures.|
|280||22||Troll (episode)||April 28, 2015.||Special Agent Ned Dorneget from NCIS cyber operations assists the team when a Navy ensign who worked in the Office of Naval Intelligence is murdered while the team discovers that Jake and Gibbs have become good friends.|
|281||23||The Lost Boys (episode)||May 5, 2015.||The NCIS cyber case turns into a united global effort after evidence confirms "The Calling", an international terrorist group that recruits children through the internet, has been purchasing S-bombs off the black market.|
|282||24||Neverland (episode)||May 12, 2015.||NCIS feverishly investigates a global terrorist group that is recruiting teens via the Internet, following a deadly bombing overseas that results in an emotional and surprising loss for the team.|
- From the Region 2 DVD*
"World Class Action- With cases involving local cyber-terrorists to international pirates and elusive serial killers, the NCIS team keeps adventure in the line of fire. Led by Special Agent Jethro Gibbs (Mark Harmon), this expert squad hunts down humanity's most notorious enemies in the name of freedom and justice for all. Co-starring Michael Weatherly, Sean Murray, Pauley Perette, Rocky Carroll, Brian Dietzen, David McCallum and Emily Wickersham, this 6-disc, 24-episode set showcases suspense at its nail-biting, pulse-pounding best. For the first time on DVD, NCIS Season 12 is reporting for duty".
- Pre- Flight Jitters- Shooting on Location- A behind-the-scenes glimpse at filming for the Season 12 episode, "Grounded".
- Bad to the Bone- The NCIS cast and crew discuss terrorist Sergei Mishnev played by Ukrainian-American actor, Alex Veadov.
- Rocky Carroll- Director- A behind-the-scenes feature documenting how Rocky Carroll (NCIS Director Leon Vance) made his directional debut by directing the Season 12 episode, "We Build, We Fight".
- Inside Season 12- The NCIS cast and crew reflect on NCIS Season 12.
- Table for Ten- The NCIS cast gather at Larsen's Steakhouse and reflect on the twelfth season.
- Number 1 Drama or #1 Drama in the World- The NCIS cast and crew celebrate NCIS becoming the number one most-watched drama in the entire world.
- Cast and Crew Commentaries on Selected Episodes (Region 1 and 2): Commentary on "House Rules" with Sean Murray, Terrence O'Hara and Christopher J. Waild, Commentary on "We Build, We Fight" with Rocky Carroll, Jennifer Corbett and Mark Horowitz, Commentary on "Cabin Fever" with Mark Harmon, Bethany Rooney and Joe Spano.
- Deleted Scenes (Region 1 and 2).
- NCIS Season Twelve aired alongside NCIS: New Orleans Season 1, NCIS: Los Angeles Season 6, Hawaii Five-0 Season 5, and Scorpion Season 1.
- As a result of NCIS: New Orleans Season 1 airing immediately after NCIS, NCIS: Los Angeles was moved to Monday which means that NCIS: Los Angeles now airs a day before both NCIS and NCIS: New Orleans.
|Seasons of NCIS|
|NCIS Season 1 ♦ NCIS Season 2 ♦ NCIS Season 3 ♦ NCIS Season 4 ♦ NCIS Season 5 ♦ NCIS Season 6 ♦ NCIS Season 7 ♦ NCIS Season 8 ♦ NCIS Season 9 ♦ NCIS Season 10 ♦ NCIS Season 11 ♦ NCIS Season 12 ♦ NCIS Season 13 ♦ NCIS Season 14 ♦ NCIS Season 15 ♦ NCIS Season 16 ♦ NCIS Season 17 ♦ NCIS Season 18 ♦ NCIS Season 19