ION Mystery

At Halloween, the team investigates a string of murders that mirrors stories from well-known Hawaiian folklore; Grover visits a man who is hours away from execution and may hold the key to a case that has plagued Grover for years.

The murder of two tourists leads the team to a man who has multiple personality disorder; Danny and the others hire a stress management consultant to help McGarrett.

A bank heist in progress forces Steve to make a potentially heartbreaking mistake; Adam faces an empty home without Kono.

McGarrett poses as a pilot to investigate a plane crash that led to the death of a pilot in an air race.

McGarrett, Danny, Tani, and Junior are exposed to a deadly biological weapon; the rest of the team has eight hours to find an antidote.

Danny is shot while quarantined in the hospital; unconscious, he clings to life and imagines a future for everyone.

Danny tells Charlie a bedtime story about a case involving bad Santas and a holiday miracle.

When an FBI agent who was cracking down on organized crime is killed, McGarrett rounds up every gang-related criminal on the island to find the culprit responsible for the murder.

Team Scorpion's job to find sunken treasure goes awry when Walter and Paige's boat explodes, leaving them lost in the middle of the Pacific Ocean surrounded by sharks.

Walter and Sylvester enter an international chess competition under cover on foreign soil in an effort to extricate a U.S. spy before her identity is exposed.

Happy, Sylvester and Cabe suffer from life-threatening, fear-based hallucinations after a simple mission to protect a vital seed bank goes awry.

Team Scorpion must move Happy's friend Ada, and the sterile bubble Ada lives in that protects her compromised immune system, to a secure location after a severe storm leaves the structure surrounded by dangerous debris.

The team is concerned when Sebastian becomes unreachable while under cover as a new recruit.

The team must track down a mysterious female assassin responsible for murders in Athens, Rome and London; Wade's son begs her to allow him to go on a police ride-along for an article he's writing on a youth outreach program.

The team investigates the murder of a JAG captain who was discovered at home by his daughter, the only heir to his large estate; Sebastian is intimidated when he is put in charge of a team on his first day of training.

When Pride is unable to sleep due to continuing nightmares about the mysterious man in the red suit; he undergoes a specialized treatment to help him figure out the man's identity; an arrogant new officer joins the team.

Tammy must protect a teenage girl after her father is shot in their home; the rest of the team searches for a motive.

When a man impersonating Lasalle attempts to free a young woman from jail, the team investigates both the impostor and the prisoner; Pride's daughter pays him a surprise visit.

Racial tensions rise in New Orleans when a white officer shoots a black Navy officer he believed was armed in the middle of a busy street party.

When a Navy sailor is found dead, the team tracks the suspicious movements of people in his life prior to his death; Hannah comes to terms with her daughter's relationship with her ex's new girlfriend.

When Sebastian is injured while unsuccessfully trying to prevent a kidnapping, NCIS races to find the missing woman and her abductors; the team gets a peek into Agent Carter's personal life.

The team investigates the death of a Naval microbiologist whose hobby as a "myth buster" resulted in his death at the hands of a legendary bayou creature; Agent Khoury conducts an investigation into previous actions of Deputy Director Van Cleef.

As New Orleans grapples with the effects of COVID-19, Pride sends Tammy and Carter to investigate a suspicious death aboard an offshore humanitarian ship; Wade is overwhelmed by the high volume in the morgue due to COVID-19.

Tammy and Carter continue to investigate a suspicious death aboard a COVID-infected humanitarian ship; Pride and the team discover what may be the key to finding the killer; Wade helps a grieving woman.

Pride and the team take on a group of dirty cops when they discover that a murder victim was also a key witness in multiple excessive force cases; Tammy faces the reality of being in a new relationship.