Watch Hawaii Five-0 Season 1 full episodes online, free and paid options via our partners and affiliates. Watch Hawaii Five-0 Season 1 Episode 23"Ua Hiki Mai Kapalena Pau" Original Air Date May 09, 2011 With the invaluable information that was shared by Agent Jenna Kaye, Five-0 is closer than ever to capturing Wo Fat - until the mission takes a wrong turn. Watch Hawaii Five-0 Season 1 Episode 22"Ho'ohuli Na'au" Original Air Date May 02, 2011 It's the worst kind of overexposure when world-renowned photographer Renny Sinclair is murdered while on assignment in Hawaii shooting the annual swimsuit edition. Watch Hawaii Five-0 Season 1 Episode 21"Ho'opa'i" Original Air Date April 18, 2011 When a crime lord moves against the family of an undercover NYPD detective who infiltrated his organization, it's up to McGarrett and Five-0 to stop the policeman Diddy from exacting revenge. Watch Hawaii Five-0 Season 1 Episode 20"Ma Ke Kahakai" Original Air Date April 11, 2011 McGarrett and Danno find a dead body while hiking on this episode. Elsewhere, Kono and Chin Ho go home to visit their aunt. Watch Hawaii Five-0 Season 1 Episode 17"Powa Maka Moana" Original Air Date February 14, 2011 Vanessa Minnillo and Nick Lachey guest star on this installment of Hawaii Five-O. They play an engaged couple that gets entangled in a pirate attack. Watch Hawaii Five-0 Season 1 Episode 16"E Malama" Original Air Date February 07, 2011 Mariana Klaveno guest stars on this episode as a murder case witness who goes missing. The team must go into the jungle to track her down. Watch Hawaii Five-0 Season 1 Episode 15"Kaie'e" Original Air Date January 23, 2011 The head of the Tsunami Warning Center disappears on this episode. It's bad timing, too, because a storm is coming to the island. Watch Hawaii Five-0 Season 1 Episode 14"He Kane Hewa' Ole" Original Air Date January 17, 2011 The team discovers a box with multiple humans inside it on this week's episode. Chin, meanwhile, has an awkward reunion with his former fiancee. Watch Hawaii Five-0 Season 1 Episode 13"Ke Kinohi" Original Air Date January 03, 2011 This is a major episode for McGarrett. He discovers new clues about his mother's murder in the wake of his sister getting kidnapped. Watch Hawaii Five-0 Season 1 Episode 11"Palekaiko" Original Air Date December 06, 2010 The team investigates the murder of a man on his honeymoon this week, while Dr. Bergman recognizes a similarity between this case and a slew of unsolved homicides from a year ago. Watch Hawaii Five-0 Season 1 Episode 10"Hao Kanaka" Original Air Date November 22, 2010 The unit is baffled when an armored car is ripped off by a ring of thieves on this episode. Two security guards are killed in the process, while Danno is forced to ask his ex-wife for a favor. Watch Hawaii Five-0 Season 1 Episode 9"Po'ipu" Original Air Date November 15, 2010 A security officer is killed this week, before he can reveal the details of an assassination plot. As a result, the team is brought in to protect a ruthless dictator. Watch Hawaii Five-0 Season 1 Episode 8"Mana'O" Original Air Date November 08, 2010 Danny's ex-partner turns up dead this week. He's found in a barbecue pit. The investigation into this crime pits Kono and company against Internal Affairs. Watch Hawaii Five-0 Season 1 Episode 7"Ho'apono" Original Air Date November 01, 2010 We delve into McGarrett's past as a Navy SEAL this week, as there's a hostage situation aboard the Missouri memorial battleship. Kelly Hu guest stars Watch Hawaii Five-0 Season 1 Episode 6"Ko'olauloa" Original Air Date October 25, 2010 An important CEO is found dead on this episode. This case forces Kono to revisit her past, as the team heads into the world of North Shore surfing. Watch Hawaii Five-0 Season 1 Episode 5"Nalowale" Original Air Date October 18, 2010 The teenage daughter of a Ambassador is found dead on this episode. The task of Five-0? Track down her abducted sister. Watch Hawaii Five-0 Season 1 Episode 4"Lanakila" Original Air Date October 11, 2010 The team is assigned the task of finding a young couple on vacation who's been kidnapped by an escaped convict this week. Also of note McGarrett's sister arrives from the mainland. Watch Hawaii Five-0 Season 1 Episode 3"Malama Ka Aina" Original Air Date October 04, 2010 A gang war spills into the stands of a local high school football game on this week's episode. Looking into it, the team uncovers an unusual partnership between Samoan gangs and a mainland mob. Watch Hawaii Five-0 Season 1 Episode 2"Ohana" Original Air Date September 27, 2010 A former cyber terrorism expert is kidnapped this week. As a result, McGarrett and his unit are assigned to track down the individual in order to protect national security. Watch Hawaii Five-0 Season 1 Episode 1"Pilot" Original Air Date September 20, 2010 It's time to meet the cops that will patrol Hawaii for us. On this series premiere, Steve McGarrett returns home to Honolulu and meets his new team.