From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has any connection to Navy and Marine Corps personnel, regardless of rank or position.
Nature of the BeastTony, during his task for the SecNav, took fire and sustained a concussion, and he acquired the bloody badge of some other NCIS agent; however, he has no memory of his activities. Gibbs and a shrink help Tony to begin to regain his memory.
Restless
E2
RestlessThe NCIS team uncovers a startling surprise after a young Marine shows up to his homecoming party with a fatal stab wound.
The Penelope Papers
E3
The Penelope PapersA Naval Reserve lieutenant dies of a gunshot in Washington, DC; Gibbs and company investigate; the victim has one of McGee's cards; McGee learns that his paternal grandmother is involved. The gang assemble the pieces and catch the bad guy.
Enemy on the Hill
E4
Enemy on the HillThe NCIS team searches for the person and motive behind a contract killer targeting a Navy Lieutenant Commander.
Safe Harbor
E5
Safe HarborA boarding party from a Coast Guard cutter visits a foreign-flag cargo ship; no crewmember is visible, but a gunman kills a petty officer. The NCIS and the CGCIS investigate. Gibbs, Borin, and the gang sort it out and serve justice.
Thirst
E6
ThirstAn NCIS case changes from accidental death to murder when evidence reveals that a Navy Lieutenant died of forced over-hydration.
Devil's Triangle
E7
Devil's TriangleDiane, the mutual ex-wife of Gibbs and Fornell, gets help from them; Victor, her current husband, has disappeared; they and the gang find the pieces, put them together, find the bad guys, and deal with them. Diane gives Gibbs a watch.
Engaged (1)
E8
Engaged (1)An aircraft crashes short of Dover AFB, Delaware, while carrying the remains of six Marines from Afghanistan; Abby does not find the DNA of one of the six; Gibbs and others consider the possibility that the one is still alive. [Continued.]
Engaged (2)
E9
Engaged (2)Gibbs and Ziva fly to Afghanistan to seek 1Lt. Flores or her body; Abby learns where she might be; an extraction team finds and saves her. Back in the USA Gibbs and the gang anticipate what's next, find a bad guy, and prevent an explosion.
Sins of the Father
E10
Sins of the FatherAfter Anthony DiNozzo, Sr. is found in a car with a dead body in the trunk and no memory of the previous night, the NCIS team must figure out if he is capable of murder.
Newborn King
E11
Newborn KingA Navy captain dies by gunfire; Gibbs and company investigate; the gang meet Emma, a pregnant Marine first lieutenant, who says that she's the real target. The team figure out the pieces, and they deal with the problems and the bad guys.
Housekeeping
E12
HousekeepingTwo boys find the body of a Navy commander in a quiet suburban neighborhood; Gibbs and company investigate. EJ Barrett reappears from her hiatus but remains a target. Another man dies, and the gang protect EJ and find and catch the killer.
A Desperate Man
E13
A Desperate ManA Navy woman lieutenant commander dies of gunfire; she has served as a Naval attaché overseas, and her husband is a detective for the Metro PD; Gibbs and company investigate; the widower's help does not help, but the gang solve the puzzle.
Life Before His Eyes
E14
Life Before His EyesAt a diner an unknown person with a drawn pistol approaches Gibbs, who deals with him; then Gibbs experiences flashbacks and fantasies, which Franks explains. The next day McGee announces a decision, then the gang gear up and head out.
Secrets
E15
SecretsA civilian and a Navy captain die of gunfire in Washington, DC; Gibbs and company investigate; the Duck sees unusual undergarments, which are also costumes. The gang solve the puzzle and nab the bad guys; Wendy reveals something to Tony.
Psych Out
E16
Psych OutGibbs clashes with Dr. Samantha Ryan over the truth behind a Navy reservist's possible suicide.
Need to Know
E17
Need to KnowWhen Gibbs meets with a Navy chief petty officer and his attorney (to make a deal), the CPO collapses and dies; while the gang investigate, they find a connection to an illicit arms dealer. The team figure it out, and everything works out.
The Tell
E18
The TellWhile Gibbs and Tony man a protective detail for the SecNav, a gunman shoots the secretary; the NCIS investigates quietly with the help of Dr. Ryan. Blackmail is involved; the gang and Ryan figure it out and find a hacker and the bad guy.
The Good Son
E19
The Good SonWhile on liberty in Baltimore, Maryland, a boatswain's mate second-class dies of a stab wound; Gibbs and company investigate; the prime suspect is a brother-in-law of Vance. The team persist, Abby solves the case, and they nab the bad guy.
The Missionary Position
E20
The Missionary PositionFollowing the murder of a Marine, Tony and Ziva join Ziva’s longtime friend and mentor in Columbia in a search for a missing Marine Lieutenant and Navy Chaplain.
Rekindled
E21
RekindledAfter a warehouse fire reveals missing Navy documents, posing a potential threat to national security, the NCIS team joins the Baltimore P.D. investigation, reuniting Tony with a boy from his past.
Playing with Fire
E22
Playing with FireGibbs and company continue to investigate an explosion and a fire; Tony, McGee, and Ziva work aboard aircraft carriers; Ducky and Abby provide much support. Tony and Ziva nab a bad guy, who tells who hired him and why. [Continued.]
Up in Smoke
E23
Up in SmokeDorneget gets a surprise from a dentist; Gibbs and company continue to investigate Dearing and the thermite incidents. Dearing visits the Navy Yard and messes with Gibbs. Moves and countermoves abound; Vance disappears. [Continued.]
Till Death Do Us Part
E24
Till Death Do Us PartGibbs and the gang continue to pursue Dearing, the explosions, and the disappearance of the director; Dearing continues to mess with Gibbs and Ryan. After another explosion and another death, disaster strikes at the Navy Yard. [Continued.]
