Steve McGarrett returns home to Oahu, in order to find his father's killer. The governor offers him the chance to run his own task force (Five-0). Steve's team is joined by Chin Ho Kelly, Danny "Danno" Williams, and Kono Kalakaua.
The worst episode of "Hawaii Five-0" is "Imi Loko Ka ‘Uhane (Seek Within One’s Soul)", rated 6.3/10 from 826 user votes. It was directed by N/A and written by N/A. "Imi Loko Ka ‘Uhane (Seek Within One’s Soul)" aired on 4/29/2013 and is rated 0.1 point(s) lower than the second lowest rated, "A'ole e 'olelo mai ana ke ahi ua ana ia (Fire Will Never Say that It Has Had Enough)".
Five-0 allows a talk show host and her crew to follow them for the day, but the investigation turns dangerous when they have a run-in with Wo Fat.
Director: N/A
Writer: N/A
McGarrett and Danny recruit Tani Rey to join the task force when diabolical hacker Aaron Wright releases a dangerous arsonist from prison.
Director: Bryan Spicer
Writer: Eric Guggenheim, Peter M. Lenkov, Rob Hanning
It's Christmas Eve and Danny tells Charlie a bedtime story about a recent Five-0 case involving criminals dressed as Santas and a holiday miracle.
Director: Tara Miele
Writer: Rob Hanning
While investigating Flippa’s friend’s murder, McGarrett and Grover uncover a deadly plan by an extremist group on the Island. Also, Grover has an emotional reaction to the case.
Director: Peter Weller
Writer: Paul Grellong
While Five-0 investigates the theft of a high tech, indestructible suit built for the U.S. military, Jerry helps his sister try to save a captive elephant.
Director: Jerry Levine
Writer: N/A
McGarrett and Five-0 discover a Russian spy ring hiding in plain site on Oahu when a Russian nuclear attack submarine appears on the coast of Waikiki. Also, Tani is conflicted by her unnerving discovery at Adam's house.
Director: Bryan Spicer
Writer: Eric Guggenheim, Peter M. Lenkov
Soon after Danny meets the girl of his dreams, they get into a potentially fatal car accident in an area far from help. Also, McGarrett enlists Quinn and Tani to help when Eddie the dog suddenly shows signs of PTSD.
Director: Peter Weller
Writer: N/A
The murder of two tourists leads Five-0 to a man suffering from multiple personality disorder, where one of them becomes violent and another is a child. McGarrett is accompanied on the case by a stress management consultant, whom Danny and the others have hired to help him manage his health.
Director: Carlos Bernard
Writer: Eric Guggenheim, Zoe Robyn
Thanksgiving brings Grover’s parents and brother Percy Jr. to Oahu for a visit tainted by sibling rivalry, and Five-0 investigates a thief who is crushed to death by an empty safe.
Director: Carlos Bernard
Writer: Chi McBride
When the corpse of a diamond smuggler is stolen from a graveyard, Five-0 tracks down his partner, Voss, who will stop at nothing to retrieve their latest batch of contraband. Also, Adam recruits a new confidential informant, Jessie Nomura; Tani gets a devastating call; and McGarrett tasks Pua to find his and Danny's stolen tools.
Director: Peter Weller
Writer: Eric Guggenheim
Crime spikes when a heat wave hits Oahu, causing McGarrett and Danny to hunt down a bank thief, and Tani and Junior's car is stolen while they're on duty. Also, Grover plays the golf game of a lifetime, and Kamekona incites a riot by price-gouging on his shave ice.
Director: Antonio Negret
Writer: Rob Hanning
At Halloween, Five-0 must investigate a string of murders that mirror stories from well-known Hawaiian folklore. Also, Grover is called to visit a man hours away from execution who may hold the key to a case that has plagued Grover for years.
Director: Bronwen Hughes
Writer: Eric Guggenheim, Peter M. Lenkov
Adam's mission to take down organized crime on the Island goes sideways when deadly chlorine gas he was using to bait a big fish falls into the wrong hands. Also, Adam begins to doubt Jessie's allegiance.
Director: Maja Vrvilo
Writer: Liz Alper, Ally Seibert
McGarrett investigates a cold case from the 1940s, one that his grandfather and the famous Honolulu detective Chang Apana worked on, and he tries to deduce how the case could have been solved. Also, McGarrett and Danny get ready for the opening of their restaurant.
Director: Bryan Spicer
Writer: David Wolkove, Matt JL Wheeler
The investigation of a murdered pool cleaner leads the Five-0 team to a possible terrorist cell of radicalized students plotting an attack on U.S. soil.
Director: N/A
Writer: N/A
When Kono goes on a solo outrigger trip around the Hawaiian islands in honor of her mother, she hits a patch of wild weather and must fight to stay alive. As Five-0 searches for Kono, they investigate a man busted for cooking meth who claims he received a threat on his son’s life if he didn’t continue making the drug.
Director: N/A
Writer: N/A
Grover goes to Chicago to get a confession from Clay Maxwell; Chin and Kono are held at gunpoint by people who don't know they are cops.
Director: N/A
Writer: N/A
When a cache of guns is stolen from a gun range, Five-0 discovers the culprit is intent on making a dramatic and potentially deadly statement on gun violence. Also, Kono and Adam are finally reunited when he is released from prison,
Director: Ron Underwood
Writer: N/A
While McGarrett and Danno celebrate Valentine's Day with their girlfriends, the rest of Five-0 investigates the murder of a man taking a class on how to land women.
Director: Jerry Levine
Writer: David Wolkove, Matt JL Wheeler
McGarrett and Danny investigate the murder of a private detective whose client was killed the same way, and Adam sends Jessie into a dangerous situation with disastrous consequences. Also, Danny’s uncle, Vito, comes to town to help Danny and McGarrett get their restaurant up and running.
Director: Bryan Spicer
Writer: David Wolkove, Matt JL Wheeler
Tani and Junior go undercover as prospective parents in order to infiltrate a private school where the headmaster was murdered. Also, Adam's life is on the line when he is held captive and forced to produce a hidden massive amount of money.
Director: Jerry Levine
Writer: David Wolkove, Matt JL Wheeler
McGarrett and Five-0 take on the mob when a former boss is killed and Junior's friend Cammy Lin is on the run after witnessing the hit.
Director: Jim Jost
Writer: Peter M. Lenkov, Matt JL Wheeler
Five-0 investigates the murder of a man dressed as a Hawaiian NaKoa warrior found in the jungle near the site of a historical war reenactment
Director: Steve Boyum
Writer: N/A
The lives of Five-0’s informants are in danger when the HPD system is hacked and one ends up dead, forcing McGarrett to enlist the help of hacker Aaron Wright (Joey Lawrence), who he just imprisoned
Director: Antonio Negret
Writer: Rob Hanning