ION Mystery

After a murder takes place at a convention of Elvis impersonators, the victim's body is stolen; Gabriel asks Chin for help.

When a dead woman is found in a hotel suite belonging to three married, hungover men, the team must help them retrace their steps as they try to remember what happened -- and find the killer.

During a solo outrigger trip, Kono encounters bad weather and must fight for her life; the Five-0 investigates a man in trouble for cooking meth.

After apprehending a fugitive, a bounty hunter is murdered; Rachel reveals a secret to Danny that has ramifications; Chin talks to McGarrett about his concerns regarding Adam.

On the eve of Adam and Kono's wedding, the Five-0 must stop a fanatical patriot who wants to detonate stolen nuclear warheads and place the blame on a terrorist -- resulting in a new war on terror.

The team investigates a centuries-old pirate story involving buried treasure; Gabriel kidnaps Kono and Adam on the morning after their wedding.

A bomb squad is attacked and the culprit threatens to detonate hidden explosive devices unless arsonist Jason Sinclair (Randy Couture) is released from prison.

A scuba diver is killed with a gun that was used in a recent murder; McGarrett gets ready to propose to Catherine.

After Oversight is almost killed in a bombing, he recruits Mac to help him find the suspected bomber; Mac meets his Aunt Gwendolyn.

Los Angeles' power grid is taken hostage in a ransomware attack resulting in a citywide blackout; the team discovers the ransomware code used was written by Riley years ago.

When Mac is put into a dream state to help him recall key evidence found in Nikola Tesla's secret lab that could stop Codex's deadly plot, he encounters Nikola Tesla, Alexander Graham Bell, Thomas Edison and his mother.

Mac is placed inside a fake prison cell with a top Codex operative, "The Merchant," to gain his trust and get intel on their next move.

The team is forever altered when MacGyver's Aunt Gwen gets into his head and convinces Mac and Riley to join Codex; Matty and Russ take their concerns about Codex to the White House.

Mac and Riley's mission is interrupted when Russ, Desi and the Phoenix team move to prevent Codex from detonating a weapon of mass destruction; the team discovers Russ' real reason for purchasing the Phoenix Foundation.

Mac and the team infiltrate a hotel used as a hideout for criminals and find a woman with vital information on Codex.

When Taylor's former protégé is killed while preventing a bioweapon from falling into the wrong hands, Mac and the team must find the weapon so Desi can pull off the ultimate heist before it's sold to a terrorist cell.

As Reid deals with a personal loss, the rest of the team heads to San Francisco after victims are found in the Mission District.

When an author's daughter goes missing on the anniversary of his wife's disappearance, the team investigates the author as a possible suspect.

The team heads to Austin to investigate when victims with watches set to inaccurate times are discovered; the team's stalker gets closer.

Victims of the Replicator, the BAU's stalker, turn up in Philadelphia; the members of the team think they are getting close to apprehending their suspect.

The team investigates victims who were sharing details about their personal lives and inner desires online; Kevin becomes jealous when he finds out that Garcia might have a new love interest.

When the team goes to Morgan's old neighborhood to track an UnSub targeting middle-aged men, Morgan suspects they are looking for someone connected to the man who abused him as a child.

A 25-year-old time capsule opened in a small Colorado town reveals a gruesome discovery and a possible connection to a local police officer's death.

The team heads to Rapid City when two men are murdered in a ritualistic way; Reid mourns Maeve's death.

The BAU team heads to Los Angeles in search of a suspect who kidnaps nannies and the children they care for.