The fifth season of Hawaii Five-0 premiered on September 26, 2014 on CBS and concluded on May 8, 2015. The season consisted of 25 episodes.
Episode 1 – Nowhere to Hide
Season Premiere. A unmanned aerial vehicle is hijacked and begins sweeping through Hawaii, leaving a trail of death and destruction in its wake, prompting the H50 team to investigate while Steve and Danny go for a mandated review with a psychologist with Danny getting a shock when he meets a gangster who has news about Danny’s younger brother, Matt.
Episode 2 – Family Man
As the team tackle the abduction of a young woman, Danny learns more about his brother who is being held hostage.
Episode 3 – The Last Break
A tourist bus is hijacked, prompting the team to investigate while Danny searches for money that could hopefully save his brother’s life.
Episode 4 – The Painter
The team must find and stop an assassin out to kill people who are in the Witness Protection Program, only for the case to become complicated when the assassin in question is gunned down by a sniper who turns out to be another assassin while Steve and Danny head to Colombia to save Danny’s brother, only for things to take a tragic turn…
Episode 5 – Legacy
The fifth anniversary of John McGarrett’s death arrives and as Steve is at his father’s graveside, he meets a young woman whose own father was killed twenty years ago and whose case John investigated while Steve attempts to keep in contact with Danny who has taken a leave of absence from the team in the aftermath of the events in the previous episode.
Episode 6 – Unmasked
As Chin, Kono and Grover investigate a series of killings that could be connected to a horror movie that was released in 1984, nearly thirty years ago, Steve and Danny help Jerry by investigating Farrow.
Episode 7 – If Perhaps
Steve is captured by Wo Fat and interrogated while being given a series of drugs that cause Steve to hallucinate an alternate reality, one where his father didn’t die and where his closest friends are leading very different lives.
Episode 8 – Inside Job
The team investigate when a couple are found murdered while Steve’s aunt, Deb returns to the island and reveals that she’s getting married.
Episode 9 – Longshot
As Hawaii gets ready to celebrate Christmas, the H50 team find themselves investigating the death of a cowboy.
Episode 10 – Broken Dreams
With the help of a private investigator, Five-0 investigates the murder of a young woman.
Episode 11 – Stolen
The H50 team investigate when a man on vacation with his family is gunned down in his hotel room by a mysterious figure, only to discover that the victim wasn’t who he appeared to be. Kono and Chin later go undercover to retrieve some stolen paintings but the operation later becomes a hostage situation. Meanwhile, Kamekona trains with an Iron Chef.
Episode 12 – Not Forgotten
Hawaii Five-0 investigate the murder of a brain surgeon who was originally scheduled to perform emergency surgery on their enemy, Paul Delano while McGarrett’s father’s car is stolen and later found in a disassembled state, McGarrett launches an investigation. Also, Grover’s daughter continues to have nightmares of her kidnapping.
Episode 13 – Doomsday
A patient transfer to Oahu goes horribly wrong when McGarrett and Joe White are attacked by coordinated attackers. Five-0 investigates and finds out that the patient has a deadly strain of bird flu and with him kidnapped, a worldwide pandemic could occur.
Episode 14 – Blackout
H50 investigate when a criminal escapes from Oahu prison with the hunt for answers leading them to a model and a notorious criminal named “Roman” whose true identity has never been seen but all is not what it seems…
Episode 15 – Searching for the Truth
It’s Valentine’s Day in Hawaii but the H50 team are in no mood to celebrate as they find themselves investigating a possible robbery and murder while Danny learns that Grace may have a potential boyfriend.
Episode 16 – Embers
Hawaii Five-0 investigate the work of an arsonist who’s torching homes in Oahu with the team enlisting the help of an ATF agent to help them while Danny and Amber go on a romantic getaway but the trip is cut short when Amber’s abusive ex-husband comes to town to take her back as Steve and Lou have a game of golf.
Episode 17 – Stakeout
The team investigate a robbery at a jewelry store with Steve and Danny going on a stakeout in the hope of finding and arresting the criminals responsible. As this happen, both men attend therapy.
Episode 18 – Justice for All
The team jump into action when both Danny and Chin are arrested.
Episode 19 – Close Shave
While getting a haircut at his local barber shop, Steve gets involved in a shootout with a group of criminals while Jerry is falsely accused of stealing and ends up being arrested.
Episode 20 – Instinct
Grover investigates when his oldest and closest friend comes to him for help while Danny and Mindy get locked into a lift with a dead body that needs to be processed immediately before all the evidence is lost.
Episode 21 – Fallen Star
Hawaii Five-0 investigate the death of an Elvis that takes place during an Elvis Impersonation convention that Jerry and Max are attending while Grover returns to Hawaii.
Episode 22 – Chasing Yesterday
When a dead woman is found in a hotel suite belonging to three married, hungover men, the team must help retrace their steps as they try to remember what happened — and find the killer.
Episode 23 – Sharing Tradition
While Chin Ho faces an old nemesis when Five-0 tracks down a meth ring associated with a murder, Kono is lost at sea during a solo journey after a violent storm.
Episode 24 – Prey
While Five-0 investigates the murder of a bounty hunter after he apprehended a fugitive hiding out in Hawaii, Rachel reveals a long-held secret to Danny that has serious ramifications.
Episode 25 – Until We Die
On the eve of Kono’s wedding to Adam, Five-0 must stop a fanatical patriot intent on starting a new war on terror by detonating stolen nuclear warheads and framing a terrorist leader while Chin deals with Gabriel and Steve attempts to come to terms with the return of an old friend.
Season 5 gets juicer with Kono and Adam’s wedding, Lou beginning to be apart of the team, Danny and Chin Ho’s arrest and Wo Fat being back. More action also comes more comedy between the team.