Alexandre Dumas' classic about four young swashbucklers in 17th-century France.
Hetty is forced to fire Deeks when he makes a costly error during a stakeout; and Kensi is caught off guard by emotions that arise when she has to say good-bye to her partner.
The team searches for a classified device that was stolen from a college research facility and has the capability of destroying Los Angeles.
Nell goes undercover when a researcher for the defense department is murdered and she's asked to replace him.
Jada Khaled is abducted during an ambush, and the team rushes to save her.
Callen goes undercover at a prestigious high school after a 15-year-old hacker compromises terrorist missions.
The investigation into the murder of a security guard at a train yard uncovers a terrorist threat aimed at a Los Angeles-based train.
A terrorist attack on Los Angeles is imminent after a nuclear detection device is stolen. The case reconnects Hetty with someone from her past and the relationship jeopardizes her career.
Kensi and Deeks investigate the murder of a homeless man, who was a former marine and CIA agent. The probe reveals the victim had connections to the Mexican cartel.
Part 1 of 2. When an antiques dealer is murdered, Hetty sends the team on a search for a missing book that contains top-secret information.
Conclusion. The teams continues to search for the black book containing top-level secrets.
Kensi takes a case personally when she bonds with a witness, a former naval intelligence officer suffering from post traumatic stress disorder who is the only survivor of a shootout.
The team investigates the theft of a body with a Navy identification marking from an autopsy room, and they uncover an experimental Navy tracking system.
The team looks for a hacker who stole Pentagon documents that were uploaded to a blog before the person gets the decryption code to the wrong people.
Sam goes undercover in prison to stop a group of international terrorists responsible for bombings around the world.
Callen catches a home invader at his house, but the situation leads to a bigger case involving counterfeit computer chips entering the U.S.
Corrupt cops are targeted when it's suspected they're working with military personnel, and Sam and Callen go undercover as California highway patrol officers to stop the operation.
Deeks is shot when a convenience store is robbed and the investigation centers on whether he was the target or an innocent bystander.
Sam and Callen go to Yemen to hunt a terrorist leader and rescue the abducted son of a Saudi prince.
A naval intelligence officer responsible for tracking a Venezuelan politician vanishes, and the agents believe the politician's life could be in danger.
A botched Marine-base theft has Kensi going undercover as a thief to determine what the criminals were trying to steal.
Eric goes undercover in the field for the first time after a rocket-engine expert is killed and Hetty wants to ensure that classified satellite technology is safe.
Deeks goes undercover to protect a friend who is the principal informant in an arms-trafficking case.
A Navy SEAL imposter's death gives the team a lead on a missing canister used to make deadly bombs.
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