FIRST SEASON (2010-2011):
1 Pilot (Pilot)
The governor of Hawaii authorizes Navy SEAL intelligence officer Steve McGarrett to put together a special task force whose first job is to capture the man who killed McGarrett's father.2 Ohana (Family)
Five-0's task is to rescue a former National Security Agency computer expert who has been kidnapped by Serbian mobsters.3 Malama Ka Aina (Respect the Land)
When an escalating gang war spills into the stands of the local high school football game, injuring several bystanders and killing a gang leader, Five-0 uncovers an unlikely partnership between Samoan gangs and the mainland mob.4 Lanakila (Victory)
Five-0 pursues a ruthless escaped convict who wants to take advantage of an opportunity to get his money back from his former crime partner.5 Nalowale (Forgotten/Missing)
Governor Jameson gets Five-0 to lead the investigation after one daughter of the U.S. ambassador to the Philippines, who is visiting Hawaii with his family, is killed and another is missing.6 Ko'olauloa (North[eastern] Shore of O'ahu)
Kono revisits her past when the CEO of a hugely successful surf company and her former surfing mentor is murdered and an old boyfriend becomes one of the major suspects.7 Ho'apono (Accept)
McGarrett teams up with a World War II veteran when an ex-Navy SEAL suffering from post-traumatic stress disorder who is unjustly suspected of murdering his wife takes prisoners hostage on the USS Missouri.8 Mana'o (Belief)
When Danno's ex-HPD partner is found roasted in a luau, Five-0's investigation into the murder matches them against Internal Affairs, dirty cops and a powerful cocaine cartel.9 Po'ipu (The Siege)
A member of the security detail for an upcoming international aid summit is killed before he can reveal the details of an assassination plot, and Five-0 is brought in to investigate the murder and protect the target, a ruthless dictator.10 Hei Hei (The Race) a.k.a. Hao Kanaka (Iron Man)
After a highly skilled ring of thieves pulls off the heist of an armored car, killing two security guards but leaving the money behind, Five-0's only lead in the case requires Danno to reluctantly ask his ex-wife for a favor.11 Palekaiko (Paradise)
After a man is murdered on his honeymoon and his wife is abducted, the investigation reveals the crimes may be linked to a series of unsolved homicides that occurred a year earlier, in which recently married couples were targeted by a serial killer.12 Hana 'a'a Makehewa (Desperate Measures)
McGarrett resorts to desperate measures to steal money demanded by Victor Hesse, who murdered his father, after Chin Ho is abducted and an explosive device is strapped around his neck.13 Ke Kinohi (The Beginning)
After McGarrett's sister is kidnapped and thieves break into Steve's house and steal the evidence surrounding his mother's murder in 1992, the investigation reveals a possible connection between her death and the Japanese mafia, known as the Yakuza.14 He Kane Hewa' Ole (An Innocent Man)
A high-speed police chase ends with the pursued driver dead and a gruesome discovery of human remains in the suspect's car.15 Kai e' e (Tidal Wave)
The head of the Tsunami Warning Center mysteriously disappears just as a major tsunami threatens to strike Hawaii and thousands of people are evacuated from the islands.016 E Malama (To Protect)
The lone witness in a high-profile murder case disappears into the jungle when hired assassins attempt to kill her at an FBI safe house.17 Powa Maka Moana (Pirates)
Wealthy college students on spring break are kidnapped and held for ransom by pirates who commandeer the luxury catamaran the group is sailing on.18 Loa Aloha (The Long Goodbye)
Danny gets an unexpected visit from his younger brother, Matt, but Danny soon learns that Matt is the target of an FBI investigation.19 Ne Me'e Laua Na Paio (Heroes and Villains)
The investigation of a sci-fi fan dressed like a superhero falling from a high-rise hotel window uncovers new evidence in a cold-case homicide that may be linked to the current victim.20 Ma Ke Kahakai (Shore)
A dead man found in the local mountains by Steve and Danny while hiking is revealed to be a local fisherman who was shot and dumped there.21 Ho'opa'i (Revenge)
The wife of an undercover NYPD detective is murdered and he seeks revenge against the crime lord he believes targeted his family.22 Ho'ohuli Na'au (Close to Heart)
A famous fashion photographer who is in Hawaii to shoot a sports magazine's annual swimsuit edition is murdered when his trailer is torched with him inside.23 Ua Hiki Mai Kapalena Pau (Until the End is Near)
Five-0 confronts a bioterrorism threat after Danny is exposed to a lethal chemical agent.24 Oia'i'o (Trust)
The first season concludes with McGarrett being framed for the murder of the governor's assistant in a car-bomb explosion, but the evidence suggests that criminal mastermind Wo Fat is responsible and is trying to destroy Five-0.