The NCIS team investigates a cold case involving WWII-era bones on the 80th anniversary of the Pearl Harbor bombings, and are shocked to learn they belong to a 100-year-old survivor of the attack.
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When a Navy deserter accidentally comes out of hiding, his family becomes a target that drives the NCIS team and Charlie 1 to investigate who is after them; Lucy surprises the team by returning to Hawaii early.
When Navy residents discover their vehicles were burglarized, the team connects it to a series of peculiar crimes and tracks down an unlikely bandit; Whistler struggles with an uncooperative confidential informant; Alex weighs his college options.
Following a close call at a meth lab explosion, the NCIS team learns Kai is being targeted by his old friend-turned-criminal and must take him down; Lucy gets her first big case aboard her aircraft carrier.
When a high-value bioweapons expert is murdered in a secure facility, NCIS and the NCIS Elite team join forces to track down the killer and discover an even deadlier threat.
After a Marine's wife is kidnapped for ransom, the NCIS team uncovers dark secrets as they race to track down her abductor before it's too late; Sam seeks Ernie's expertise decrypting a computer program that may have deadly ramifications.
When the fiance of a vanished naval officer seeks the help of NCIS, the team reveals his secrets go much deeper than she suspected; Sam recruits Kai to be his wingman.
When a figure from Tennant's CIA past reemerges, the NCIS team seeks help from the most unlikely place to catch a killer who threatens to destroy everything Tennant has built.
When Tennant interrogates a suspect during his helicopter transfer and the helicopter crashes, she must utilize her skills to save herself and the other passengers.
Milius returns to Hawai'i as the NCIS team pursues a dangerous high-value U.S. Government target with the help of a unique informant; Tennant and Daniel deal with Alex's acceptance into the Naval Academy.
When Navy residents discover their vehicles were burglarized, the team connects it to a series of peculiar crimes and tracks down an unlikely bandit; Whistler struggles with an uncooperative confidential informant; Alex weighs his college options.
When a Navy deserter accidentally comes out of hiding, his family becomes a target that drives the NCIS team and Charlie 1 to investigate who is after them; Lucy surprises the team by returning to Hawaii early.
When the murder of a captain and his wife echoes a previous case, the NCIS team brings in a former team member to help determine if they are dealing with a copycat killer.
Following a close call at a meth lab explosion, the NCIS team learns Kai is being targeted by his old friend-turned-criminal and must take him down; Lucy gets her first big case aboard her aircraft carrier.
When a Marine corporal dies in a tide pool after being exposed to fentanyl, the NCIS team must quickly find the source of the drugs; Alex talks to his parents about taking a gap year; Ernie reveals personal news to Lucy.
The NCIS team investigates a cold case involving WWII-era bones on the 80th anniversary of the Pearl Harbor bombings, and are shocked to learn they belong to a 100-year-old survivor of the attack.
Capt. Milius returns to Hawaii for a secret prisoner exchange operation, and brings in Jane to be his personal security escort in the Philippines, where the exchange will take place.
The team investigates a shipwreck carrying exotic animals that now threaten the native wildlife on Oahu; Alex sustains a career-ending injury; Kai asks a fish and wildlife agent out on a date.
After a ransomware attempt causes a dam to malfunction, Ernie and a team of hackers are tasked to find the culprit before all power and water is cut off on the island; Whistler gets a chance to apologize to Lucy and mend their relationship.
Kai goes under cover as a chef in a local restaurant to gather intel on a notorious criminal kingpin who has a connection to the eatery; Jane discovers that a school on the mainland has recruited Alex on a baseball scholarship.
When evidence to put away a drug kingpin is stolen, Lucy goes under cover at an underground poker tournament to find out which high-roller is behind the crime; Lucy's feelings are in turmoil when Whistler's ex-girlfriend arrives in town.
The NCIS team investigates a cold case involving WWII-era bones on the 80th anniversary of the Pearl Harbor bombings, and are shocked to learn they belong to a 100-year-old survivor of the attack.
When an anti-capitalist protester is murdered, Jane and the team investigate and find themselves caught in a war between eco-activists and a tech billionaire fighting over a piece of land; Jane and Capt. Joe go on a date.
When a Navy petty officer is murdered, Jane and the team investigate while protecting the victim's friend and colleague.
When Tennant and NCIS are tasked with finding a kidnapped social media star, they find that she is not who her husband, or her followers, think she is; the team is at odds with Whistler, who has an agenda of her own.
