ION Mystery

McGarrett investigates a cold case that his grandfather and the famous Honolulu detective Chang Apana worked on in the 1940s; McGarrett and Danny get ready for the opening of their restaurant.

When a renowned urban vigilante is killed after making a citizen's arrest, the team delves into the world of superheroes and comic books to find the killer; Adam gets closer to finding out who killed his sister.

After fighting off an assassin in his own home, McGarrett and Joe White flee to Montana to prepare for a battle against those exacting revenge for a past SEAL mission.

Still reeling from the murder of one of their own, Steve and Catherine, along with Danny, Junior and some old friends, hunt down the killer; a bag of human bones discovered inside an abandoned storage locker goes missing.

McGarrett and the team support Danny and Rachel by determining what happened when Grace gets into a life-threatening car accident; Tani helps Koa when his rehab patient goes missing.

Adam, Junior and Tani travel to the bottom of the Pacific Ocean when a murder takes place in a remote underwater lab -- and the killer may still be on board.

While investigating Flippa's friend's murder, McGarrett and Grover uncover a deadly plan by an extremist group on the Island; Grover has an emotional reaction to the case.

As a dangerous hurricane hits Oahu, Five-0 is tasked with protecting El Diablo, a captured serial killer who is being hunted by an assassin; Tani's civilian safety check during the storm turns deadly; Rachel and Charlie evacuate to Danny's house.

When the top salesperson for a beauty company pyramid scheme is murdered, the team sifts through a long list of possible suspects who would want her dead; Adam befriends a homeless man.

Junior is torn between his duties and his feelings for his former girlfriend when her new man is one of the culprits in a bank heist-turned-homicide.

Tani and Junior go undercover at a gym to track down a deadly batch of steroids; Danny and McGarrett work as bodyguards for Danny's high maintenance ex-mother-in-law, a famous romance novelist with whom he has never gotten along.

The team investigates the murder of a window washer and finds that the victim is actually a renowned street artist; Grover and Adam look into the murder of a gambler; Junior helps his father when they are reminded of his sister's death.

When the team must locate a girl who purchased a gun from a junkie, it discovers that the firearm, over the course of decades, has affected all the teammates' lives.

Toby and Michelle search for a killer suspected of taking national defense secrets.

Toby goes undercover to find a group of thieves posing as police officers.

Toby and Michelle investigate a potential conspiracy linked to a mob murder trial.

After witnessing the death of an MMA fighter, Toby looks into the business dealings of two rival leagues.

A Navy captain is murdered during an appearance on a local radio show; Pride's daughter comes home to talk about her plans for the future.

Agent Brody sees a connection between the case of a sailor struck by a party bus and the death of her sister; the team gets ready for the city's St. Patrick's Day celebrations.

After Pride's daughter is attacked on campus, the team finds a surveillance van loaded with pictures of the special agent's every move.

The team investigates when a Navy lieutenant is murdered during a traditional funeral procession in the French Quarter honoring the recently deceased.

When a Navy lieutenant dies during a secret visit to a general's hotel, agent Pride and the team are asked to break protocol for the investigation.

While visiting her family's restaurant in the French Quarter, a Navy culinary specialist is the target of an explosion; in D.C., Brody tracks a lead in the Gen. Leak case.

NCIS teams with Homeland Security when the murder of a Navy master diver is discovered to be linked to the chatter concerning a foreign attack on the city.

The NCIS team discovers a mole in the ranks while helping the Department of Homeland Security locate 900 pounds of missing explosives that are a threat to New Orleans.

The team joins forces with several federal agencies to stop a sniper who has been targeting crowded events in the city; FBI Special Agent Tammy Gregorio begins investigating Pride's team.

Pride faces more repercussions from the FBI after he helps a former Navy Intelligence Analyst who is the primary suspect in a multiple homicide case.

After the discovery of a petty officer's body inside a sports arena, evidence leads Pride and the NCIS team to a kidnapping case of another petty officer, last seen in Mexico.

The NCIS must come to the rescue of one of its own when Sebastian is kidnapped while dining in a restaurant with his mother; Sebastian relies on his gaming skills in a prison break.

The NCIS and the FBI investigate a private plane crash in the bayou that killed three sailors; Sonja and LaSalle interview candidates for a job opening on the team.

A Navy SEAL candidate is murdered weeks before his graduation; Wade seeks Pride's help when her adopted son announces his plan to join the Navy.

A sailor is murdered during a rowdy motorcycle rally in the city; LaSalle seeks personal advice from Gregorio.

After a member of the United States Navy Band is murdered in her home, Pride looks after the victim's nephew, who is the only witness to the crime.

The NCIS team investigates when a Marine corporal who is an amateur race car driver is in a fatal crash on the track.

Pride needs to protect a family friend engaged to the prime suspect in an ongoing NCIS and FBI cartel case.

Sebastian goes undercover; Patton practices his old gambling skills; Pride and the team embark on a perilous plan to trap Garcia.

After Pride travels to a deep-sea oil rig for a murder investigation, the team uncovers a gas leak that's on the verge of causing a catastrophic explosion; Sebastian starts his NCIS special agent training.

The team pursues an abusive man who is on the hunt for an ex-girlfriend trying to escape him; Jess and Sarah make plans to take their dream vacation together.

Bull tries to help a CEO whose company is accused of killing an employee with its self-driving car, but a secret emerges that could sabotage a trial win.

An attorney for one of Bull's former clients asks him to consult on a couple's civil suit against a teacher who had a sexual relationship with their son; the trial strategy suffers a major setback when the teen switches to the teacher's side.

The wife of a man whom Danny helped imprison for manslaughter detonates a bomb at the TAC offices and takes the team hostage to force Bull to prove her husband's innocence.

Five-0 tries to protect a wounded Gabriel and plan an escape when enemy gunmen storm the dilapidated building in which Gabriel is trapped.

McGarrett and Danny pose as drug pilots in a plan to stop a meth epidemic on the island; Danny is forced to break cover and land the plane when McGarrett is seriously wounded.

The team hunts for a murderer who has been targeting serial killers, marking their corpses with an ivory chess piece.

A rogue MI-6 agent is the key to finding a terrorist who plans to cause the meltdown of nuclear reactors across Europe; McGarrett and Danny need the help of an FBI profiler to find a killer.

After finding a corpse in her bed, FBI profiler Alicia Brown joins McGarrett in a hunt for a killer; Kono reconnects with a former surfing competitor.

When the serial killer that Alicia and McGarrett have been hunting kidnaps them, it's up to Five-0 to find them before it's too late.

A cache of guns is stolen by a person looking to make a statement on gun violence; Kono and Adam are reunited.

On Halloween, the team investigates the murder of a medium who was apparently frightened to death by a poltergeist; a mysterious death cult kidnaps Kono and Adam.

Catherine informs Five-0 that McGarrett's mother has been captured and is in danger of being executed for trying to free Wo Fat's imprisoned father; Chin is unable to delay Sara's adoption.

While Danny chaperones Grace's high school dance, the venue is seized by terrorists, who hold everyone hostage with the intent of abducting a diplomat's son; Danny and Grover discover that Will is Grace's secret boyfriend.

A conspiracy theorist with compelling information that JFK's own cabinet planned his assassination is murdered.

A boy suffering from PTSD undergoes hypnosis and realizes he may have witnessed a murder related to a 10-year-old cold case; Danny's sister visits Oahu.

The team rushes to Mexico, where Chin puts his life in jeopardy in an effort to rescue Sara, his kidnapped niece.

When Chin is kidnapped by a Mexican cartel, Five-0 must rescue him before he is executed by the vengeful group; Grover goes undercover to investigate a murder, which turns out to be far more complex and dangerous than anticipated.

A Secret Service agent is murdered while the president is traveling to Oahu; as Thanksgiving approaches, McGarrett's Aunt Deb (Carol Burnett) visits and shares a stunning secret.

Grover's parents and brother arrive in Oahu for Thanksgiving; a thief is crushed to death by an empty safe.

Junior and Tani track down the thief who robbed his parents' home; Five-0 investigates the murder of a beloved philanthropist and the theft of his valuable koa tree; Danny moves in with McGarrett.

While Max prepares to say his goodbyes, the team investigates a murder during a police convention on the island.

The team faces a contentious U.S. Marshall after a murder suspect escapes capture and looks for asylum in the sovereign land that belongs to the Nation of Hawaii.

While working a murder case, Five-0 discovers that a former Nazi war criminal may be hiding out in an old leprosy colony in Hawaii.