Pride is forced to end his vacation early after he learns that Hannah was suspended for failing to adhere to protocol during an FBI-NCIS joint investigation.
A Navy pilot discovers an unidentified flying object shortly before crashing; Pride suffers through nightmares and insomnia after being drugged and kidnapped.
Pride visits New York City after he learns newly acquired DNA evidence was linked to a cold case from when he worked at the Jefferson Parish Sheriff's office.
A private detention center is found at the center of a malicious plot; Lasalle and Sebastian set off to search for Lasalle's missing brother in Alabama.
A Navy lieutenant worries that his girlfriend is actually a spy; Lasalle is forced to suffer through another setback while he searches for his missing brother.
Lupo and Bernard investigate the murder of an environmentalist's wife, but the case takes a turn when the victim's car is found with another body inside.
The investigation into a class action airline plaintiff's murder reveals a zealous lawyer willing to go to any lengths to protect himself and his client.
The investigation into the murder of a boy and housekeeper leads to a harassing reporter who may provide valuable information by remembering a sorority party.
A trucking company owner is found murdered, and Lupo and Bernard's investigation reveals an illegal scheme, connections to the Russian mob, and a son's secret.
The investigation into a troubled NYPD officer's life reveals valuable stolen documents, a dead body, and a man who claims to be related to a president.
Detectives investigate the death of a war widow and her baby at a bombed recruitment center and deal with overly zealous citizens; Jack makes a decision.
Mysterious emails lead to the body of a website's creator, and the following investigation uncovers a network of corruption with international overtones.
Lupo and Bernard identify a victim as a writer who tried to expose a closed espionage case, and a family is torn apart by the case; the FBI gets involved.
A television reporter's murder reveals a love triangle with a coworker, a veteran anchor's jealousy, and a story on a murdered hedge fund whistle-blower.
An illegal immigrant is found unconscious on the service road, and the investigation uncovers a connection to other hate crimes and a neighborhood bias.
Lupo and Bernard investigate the murders of three homeless men that they believe to be the work of a serial killer, though key evidence throws it into doubt.
The team faces political difficulties after four terrorists are shot and one kidnapped in New York, with no official record of them arriving in the country.
Special Agents Maggie Bell and OA Zidan pursue an active sniper who is out on a killing spree with no apparent motive to explain their violent outburst.