Five-0 helps sober up three married men and sort out the events of their wild night to find who killed the woman found in their hotel suite. Jerry witnesses a woman’s kidnapping off the streets of O'ahu.moreless
In the season finale, the team, although torn apart and uncertain as to their future, must come together to save Walter's life as his car hangs off the side of a cliff.
Walter learns Cabe's long-hidden secret regarding the Baghdad mission and it threatens to tear Team Scorpion apart. Meanwhile, Ralph puts his life in danger to help the team.
When an Elvis impersonator is killed and his body stolen, Five-0 is on the case after it's discovered the culprits are after the hidden diamonds sewn into the victim’s costume. Gabriel returns asking for Chin's help in getting off the island.moreless
Grover's oldest and closest friend tells him that he witnessed his wife fall off a cliff to her death, but Grover suspects it was no accident. Meanwhile, Danny and Dr. Shaw get trapped in an elevator with a dead body that needs to be processed.moreless
Team Scorpion's helicopter crashes while on a mission to save lost hikers. The crash ignites a massive wildfire that quickly closes in on them. Meanwhile, Sylvester tries to help the injured pilot who is unable to make it to safer ground.moreless
McGarrett and Odell come under siege in Odell's barbershop when they try to protect a man who is being hunted by a gang. Meanwhile, Jerry is wrongfully accused of committing a series of home invasions.moreless
Team Scorpion is asked to assist secret peace talks when a conflict in Eastern Europe heightens and threatens a World War III scenario.
Danny and Chin are arrested for deadly past transgressions. McGarrett enlists Joe's help in the investigation.
Steve and Danny work on their relationship when they stake out the apartment of a woman who fled from a diamond robbery.
Trapped in the past, Abbie tries to convince Ichabod that they are future partners while trying to stop Katrina from assuring the Horseman's victory.
A tech billionaire hires Team Scorpion to rescue his kidnapped daughter. Meanwhile, some feelings get hurt when Walter gives an interview and fails to acknowledge the other members of the team.
Five-0 works with a California ATF agent to locate a serial arsonist targeting couples on Oahu. Danny and Amber's romantic getaway is ruined when her abusive ex-husband tracks them down.
Ichabod and Abbie try to stop Henry's scheme to use a mystic bell to create a new cult of witches. However, they learn that he has an unexpected ally. Meanwhile, Irving comes after Jenny.moreless
A journalist is killed and Five-0 uses his reporting to track down a presumed dead Congolese warlord who is alive and living on Oahu. Meanwhile, Danny overreacts when Grace's text to a boy start accidentally showing up on his cell phone.moreless
Ichabod and Abbie find a new series of tunnels beneath Sleepy Hollow and have an encounter with an old friend of Ichabod's. Meanwhile, Katrina receives a visit from Henry, and Jenny receives a visit from Irving.moreless
Team Scorpion work undercover on a cruise ship to locate and disable stolen rockets. Meanwhile, Toby and Happy help Ralph deal with his first crush, as Valentine's Day approaches.
Kono fights for her life when she discovers the identity of a notorious criminal who has never been seen. She also confesses to Adam that she is conflicted about their future together due to his ties to his formerly corrupt family business.moreless
Solomon Kent, a warlock who set off the Salem Witch Trials to protect himself, seeks out a Grimoire that will give him the power to undo the mistake in his past that turned him into a warlock. Meanwhile, Irving approaches Abbie, while Henry contemplates his past and decides on his future.moreless
A patient infected with a contagious and lethal strain of bird flu is kidnapped and the culprits intend to weaponize the virus.
Nick's godmother, the woman who raised him after his parents died, asks for his helping stealing a mystic artifact. He reluctantly agrees, putting him at odds with Abbie, Ichabod, and Jenny. Meanwhile, Irving is cleared of the charges against him but Cynthia still has concerns.moreless
To prevent nuclear weapons from being launched from a secret U.S. nuclear silo, the team has to prod the memory of their only hope, an injured former Secret Service agent. Drew proposes that moving to Maine might be best for Ralph.moreless
Ichabod and Katrina attend the Sleepy Hollow Historical Soiree and become embroiled in a murder. Meanwhile, Abbie receives an unexpected visit.
The team must uncover the mole inside the CIA who's stealing deadly chemicals. Paige gives Walter a flirting lesson.
A neurosurgeon is assassinated just before performing a surgery. The investigation uncovers the truth behind the disappearance of four reform school boys over 40 years ago. Meanwhile, McGarrett's beloved Mercury Marquis is stolen by an unlikely culprit.moreless
A tourist is shot after unknowingly transporting a stolen Van Gogh painting. Kono and Chen investigate and infiltrate the world of black market priceless art, where they are taken hostage. Meanwhile, McGarrett asks Iron Chef Masaharu Morimoto to train Kamekona to beat Chef Sam Choy in a shrimp cook-off.moreless
While questioning their purpose now that Moloch is dead, Ichabod and Abbie discover that a group of demons have escaped from Purgatory... as has an angel, Orion. Meanwhile, Katrina offers Abraham the chance to restore his humanity.moreless
Team Scorpion try to save a boy on Christmas Eve when he gets trapped in a beach-side cave and the rising tide threatens to drown him.