S05E06: Hoʻomāʻike (Unmasked)
It's Halloween and Five-0 must track down a serial killer who is copying murders depicted in a cult slasher film. Meanwhile, McGarrett must help Jerry after he is kidnapped by the counterfeiters he has been tracking.
Previous Episode 
Season 1
Pilot
S1E1 / 20 Sep 2010
Ohana (Family)
S1E2 / 27 Sep 2010
Malama Ka Aina (Respect the Land)
S1E3 / 04 Oct 2010
Lanakila (Victory)
S1E4 / 11 Oct 2010
Nalowale (Forgotten/Missing)
S1E5 / 18 Oct 2010
Ko‘olauloa (North Shore of Oʻahu)
S1E6 / 25 Oct 2010
Ho‘apono (Accept)
S1E7 / 01 Nov 2010
Mana‘o (Belief)
S1E8 / 08 Nov 2010
Po‘ipu (The Siege)
S1E9 / 15 Nov 2010
Heihei (Race)
S1E10 / 22 Nov 2010
Palekaiko (Paradise)
S1E11 / 06 Dec 2010
Hana ‘a‘a Makehewa (Desperate Measures)
S1E12 / 13 Dec 2010
Ke Kinohi (The Beginning)
S1E13 / 03 Jan 2011
He Kane Hewa ‘Ole (An Innocent Man)
S1E14 / 17 Jan 2011
Kai e‘e (Tidal Wave)
S1E15 / 23 Jan 2011
E Malama (To Protect)
S1E16 / 07 Feb 2011
Powa Maka Moana (Pirate)
S1E17 / 14 Feb 2011
Loa Aloha (The Long Goodbye)
S1E18 / 21 Feb 2011
Ne Me‘e Laua Na Paio (Heroes and Villains)
S1E19 / 21 Mar 2011
Ma Ke Kahakai (Shore)
S1E20 / 11 Apr 2011
Ho‘opa‘i (Vengeance)
S1E21 / 18 Apr 2011
Ho‘ohuli Na‘au (Close to Heart)
S1E22 / 02 May 2011
Ua Hiki Mai Kapalena Pau (Until the End is Near)
S1E23 / 09 May 2011
Oia‘i‘o (Trust)
S1E24 / 16 May 2011
Season 2
Ha‘i‘ole (Unbreakable)
S2E1 / 19 Sep 2011
Ua Lawe Wale (Taken)
S2E2 / 26 Sep 2011
Kame‘e (The Hero)
S2E3 / 03 Oct 2011
Mea Makamae (Treasure)
S2E4 / 10 Oct 2011
Ma‘ema‘e (Clean)
S2E5 / 17 Oct 2011
Ka Hakaka Maika‘i (The Good Fight)
S2E6 / 24 Oct 2011
Ka Iwi Kapu (Sacred Bones)
S2E7 / 31 Oct 2011
Lapa‘au (Healing)
S2E8 / 07 Nov 2011
Ike Maka (Identity)
S2E9 / 14 Nov 2011
Ki‘ilua (Deceiver)
S2E10 / 21 Nov 2011
Pahele (Trapped)
S2E11 / 05 Dec 2011
Alaheo Pau‘ole (Gone Forever)
S2E12 / 12 Dec 2011
Ka Ho‘oponopono (The Fix)
S2E13 / 02 Jan 2012
Pu‘olo (The Package)
S2E14 / 16 Jan 2012
Mai Ka Wa Kahiko (Out of the Past)
S2E15 / 06 Feb 2012
I Helu Pu (The Reckoning)
S2E16 / 13 Feb 2012
Kupale (Defender)
S2E17 / 20 Feb 2012
Lekio (Radio)
S2E18 / 27 Feb 2012
Kalele (Faith)
S2E19 / 19 Mar 2012
Ha‘alele (Abandoned)
S2E20 / 09 Apr 2012
Pa Make Loa (Touch of Death) (I)
S2E21 / 30 Apr 2012
Ua Hopu (Caught)
S2E22 / 07 May 2012
Ua Hala (Death in the Family)
S2E23 / 14 May 2012
Season 3
La O Na Makuahine (Mother's Day)
S3E1 / 24 Sep 2012
Kanalua (Doubt)
S3E2 / 01 Oct 2012
Lana I Ka Moana (Adrift)
S3E3 / 08 Oct 2012
Popilikia (Misfortune)
S3E4 / 15 Oct 2012
Mohai (Offering)
S3E5 / 05 Nov 2012
I Ka Wa Mamua (In a Time Past)
S3E6 / 12 Nov 2012
Ohuna (The Secret)
S3E7 / 19 Nov 2012
Wahine‘inoloa (Evil Woman)
S3E8 / 26 Nov 2012
Ha‘awe Make Loa (Death Wish)
S3E9 / 03 Dec 2012
Huaka‘i Kula (Field Trip)
S3E10 / 10 Dec 2012
Kahu (Guardian)
S3E11 / 17 Dec 2012
Kapu (Forbidden)
S3E12 / 14 Jan 2013
Olelo Ho‘opa‘i Make (Death Sentence)
S3E13 / 20 Jan 2013
Hana I Wa ‘Ia (Scandal)
S3E14 / 21 Jan 2013
Hookman
S3E15 / 04 Feb 2013
Kekoa (Warrior)
S3E16 / 11 Feb 2013
Pa‘ani (The Game)
S3E17 / 18 Feb 2013
Na Ki‘i (Dolls)
S3E18 / 18 Mar 2013
Hoa Pili (Close Friends)
S3E19 / 25 Mar 2013
Olelo Pa‘a (The Promise)
S3E20 / 15 Apr 2013
Imi Loko Ka ‘Uhane (Seek Within One's Soul)
S3E21 / 29 Apr 2013
Ho‘opio (To Take Captive)
S3E22 / 06 May 2013
He Welo ‘Oihana (Family Business)
S3E23 / 13 May 2013
Aloha. Malama Pono (Farewell & Take Care)
S3E24 / 20 May 2013
Season 4
Aloha Ke Kahi I Ke Kahi (We Need Each Another)
S4E1 / 27 Sep 2013
A‘ale Ma‘a Wau (Fish Out of Water)
S4E2 / 04 Oct 2013
Ka ʻoiaʻiʻo ma loko (The Truth Within)
S4E3 / 11 Oct 2013
A Ia La Aku (From This Day Forward)
S4E4 / 18 Oct 2013
Kupu‘eu (Fallen Hero)
S4E5 / 25 Oct 2013
Kupouli ‘La (Broken)
S4E6 / 01 Nov 2013
Ua Nalohia (In Deep)
S4E7 / 08 Nov 2013
Akanahe (Reluctant Partners)
S4E8 / 15 Nov 2013
Hau‘oli La Ho‘omaika‘i (Happy Thanksgiving)
S4E9 / 22 Nov 2013
Ho‘onani Makuakane (Honor Thy Father)
S4E10 / 13 Dec 2013
Pukana (Keepsake)
S4E11 / 20 Dec 2013
O Kela Me Keia Manawa (Now and Then)
S4E12 / 10 Jan 2014
Hana Lokomaika‘i (The Favor)
S4E13 / 17 Jan 2014
Na hala a ka makua (Sins of the Father)
S4E14 / 31 Jan 2014
Pale'la (Buried Secrets)
S4E15 / 28 Feb 2014
Hoku Welowelo (Fire in the Sky)
S4E16 / 07 Mar 2014
Ma Lalo o ka ʻlli (Beneath the Surface)
S4E17 / 14 Mar 2014
Ho‘i Hou (Reunited)
S4E18 / 04 Apr 2014
Ku I Ka Pili Koko (Blood Brothers)
S4E19 / 11 Apr 2014
Pe‘epe‘e Kānaka (Those Among Us)
S4E20 / 25 Apr 2014
Makani ʻOlu a Holo Malie (Fair Winds and Following Seas)
S4E21 / 02 May 2014
O ka Pili ‘Ohana Ka ‘Oi (Family Comes First)
S4E22 / 09 May 2014
Season 5
Aʻohe kahi e peʻe ai (Nowhere to Hide)
S5E1 / 26 Sep 2014
Ka Makuakāne (Family Man)
S5E2 / 03 Oct 2014
Kanalu Hope Loa (The Last Break)
S5E3 / 10 Oct 2014
Ka Noʻeau (The Painter)
S5E4 / 17 Oct 2014
Hoʻoilina (Legacy)
S5E5 / 24 Oct 2014
Hoʻomāʻike (Unmasked)
S5E6 / 31 Oct 2014
Inā Paha (If Perhaps)
S5E7 / 07 Nov 2014
Ka Hana Malū (Inside Job)
S5E8 / 21 Nov 2014
Ke Koho Mamao Aku (Longshot)
S5E9 / 12 Dec 2014
Wāwahi moeʻuhane (Broken Dreams)
S5E10 / 02 Jan 2015
Ua ʻaihue (Stolen)
S5E11 / 09 Jan 2015
Poina ‘Ole (Not Forgotten)
S5E12 / 16 Jan 2015
Lā Pōʻino (Doomsday)
S5E13 / 30 Jan 2015
Powehiwehi (Blackout)
S5E14 / 06 Feb 2015
E ʻImi Pono (Searching for the Truth)
S5E15 / 13 Feb 2015
Nānahu (Embers)
S5E16 / 20 Feb 2015
Kukaʻawale (Stakeout)
S5E17 / 27 Feb 2015
Pono Kaulike (Justice For All)
S5E18 / 06 Mar 2015
Kahania (Close Shave)
S5E19 / 13 Mar 2015
Ike Hānau (Instinct)
S5E20 / 03 Apr 2015
Ua heleleʻi ka hoku (Fallen Star)
S5E21 / 10 Apr 2015
Ho’amoano (Chasing Yesterday)
S5E22 / 24 Apr 2015
Moʻo ʻolelo Pu (Sharing Traditions)
S5E23 / 01 May 2015
Luapoʻi (Prey)
S5E24 / 08 May 2015
A Make Kaua (Until We Die)
S5E25 / 08 May 2015
Season 6
Mai hoʻoni i ka wai lana mālie (Do Not Disturb the Water that is Tranquil)
S6E1 / 25 Sep 2015
Lehu a Lehu (Ashes to Ashes)
S6E2 / 02 Oct 2015
Ua ʻoʻoloku ke anu i na mauna (The Chilling Storm Is on the Mountain)
S6E3 / 09 Oct 2015
Ka Papahana Holo Pono (Best Laid Plans)
S6E4 / 16 Oct 2015
Ka ʻalapahi nui (Big Lie)
S6E5 / 23 Oct 2015
Na Pilikua Nui (Monsters)
S6E6 / 30 Oct 2015
Na Kama Hele (Day Trippers)
S6E7 / 06 Nov 2015
Piko Pau ʻiole (The Artful Dodger)
S6E8 / 13 Nov 2015
Hana Keaka (Charade)
S6E9 / 20 Nov 2015
Ka Makau Kaa Kaua (The Sweet Science)
S6E10 / 11 Dec 2015
Kuleana (One's Personal Sense of Responsibility)
S6E11 / 08 Jan 2016
Ua Ola Loko I Ke Aloha (Love Gives Life Within)
S6E12 / 15 Jan 2016
Umia Ka Hanu (Hold the Breath)
S6E13 / 22 Jan 2016
Hoa ʻinea (Misery Loves Company)
S6E14 / 12 Feb 2016
Ke Koa Lokomaikaʻi (The Good Soldier)
S6E15 / 19 Feb 2016
Ka Pohaku Kihi Paʻa (The Solid Cornerstone)
S6E16 / 26 Feb 2016
Waiwai (Assets)
S6E17 / 11 Mar 2016
Kanaka Hahai (The Hunter)
S6E18 / 01 Apr 2016
Malama Ka Poʻe (Care For One's People)
S6E19 / 08 Apr 2016
Ka Haunaele (Rampage)
S6E20 / 15 Apr 2016
Ka Pono Kuʻokoʻa (The Cost of Freedom)
S6E21 / 22 Apr 2016
I ʻika Ka Ao (For the World to Know)
S6E22 / 29 Apr 2016
Pilina Koko (Blood Ties)
S6E23 / 06 May 2016
O ke ali’I wale no ka’u makemake (My Desire Is Only For The Chief)
S6E25 / 13 May 2016
Season 7
Makaukau ʻoe e Paʻani? (Ready to Play?)
S7E1 / 23 Sep 2016
No ke aliʻi wahine a me ka ʻaina (For Queen and Country)
S7E2 / 30 Sep 2016
He Moho Hou (New Player)
S7E3 / 07 Oct 2016
Hu aʻe ke ahi lanakila a Kamaile (The Fire of Kamile Rises in Triumph)
S7E4 / 14 Oct 2016
Ke Kū ‘Ana (The Stand)
S7E5 / 21 Oct 2016
Ka hale hoʻokauweli (House of Horrors)
S7E6 / 28 Oct 2016
Ka makuahine a me ke keikikane (Mother and Son)
S7E7 / 04 Nov 2016
Hana Komo Pae (Right of Passage)
S7E8 / 11 Nov 2016
Elua la ma Nowemapa (Two Days in November)
S7E9 / 18 Nov 2016
Ka Luhi (The Burden)
S7E10 / 09 Dec 2016
Kaʻili aku (Snatchback)
S7E11 / 16 Dec 2016
Ka ʻaelike (The Deal)
S7E12 / 06 Jan 2017
Ua hoʻi ka ʻopua i Awalua (The Clouds Always Return to Alawua)
S7E13 / 13 Jan 2017
Ka laina ma ke one (Line in the Sand)
S7E14 / 20 Jan 2017
Ka Paʻani Nui (Big Game)
S7E15 / 03 Feb 2017
Poniu I Ke Aloha (Crazy in Love)
S7E16 / 10 Feb 2017
Hahai i nā pilikua nui (Hunting Monsters)
S7E17 / 17 Feb 2017
E malama pono (Handle with Care)
S7E18 / 24 Feb 2017
Puka ʻana (Exodus)
S7E19 / 10 Mar 2017
Huikau na makau a na lawaiʻa (The Fishhooks of the Fishers Become Entangled)
S7E20 / 31 Mar 2017
Ua maloʻo ka wai (The Water Is Dried Up)
S7E21 / 07 Apr 2017
Waimaka ʻeleʻele (Black Tears)
S7E22 / 14 Apr 2017
Wehe ʻana (Prelude)
S7E23 / 28 Apr 2017
He keʻu na ka ʻalae a Hina (A Croaking By Hina's Mudhen)
S7E24 / 05 May 2017
Season 8
Nā lā ʻīlio (Dog Days)
S8E2 / 06 Oct 2017
Kamaʻomaʻo, ka ‘aina huli hana (The Land of Activities)
S8E5 / 03 Nov 2017
Kau ka ʻonohi aliʻi i luna (The Royal Eyes Rest Above)
S8E7 / 17 Nov 2017
Make me kai (Death at Sea)
S8E9 / 08 Dec 2017
I ka wa ma mua, I ka wa ma hope (The Future Is in the Past)
S8E10 / 15 Dec 2017
Oni kalalea ke ku a ka laʻau loa (A Tall Tree Stands Above the Others)
S8E11 / 15 Dec 2017
Ka hopu nui ʻana (The Round Up)
S8E12 / 05 Jan 2018
O ka mea ua hala, ua hala ia (What Is Gone Is Gone)
S8E13 / 12 Jan 2018
Nā keiki a Kalaihaohia (The Children of Kalaihoahia)
S8E14 / 19 Jan 2018
He pukoʻa kani ʻaaina (A Coral Reef Strengthens Out Into Land)
S8E15 / 02 Feb 2018
Hōlapu ke ahi, koe iho ka lehu (The Fire Blazed Up, Then Only Ashes Were Left)
S8E17 / 09 Mar 2018
E hoʻokō kuleana (To Do One's Duty)
S8E18 / 30 Mar 2018
He lokomaikaʻi ka manu o Kaiona (Kind Is the Bird of Kaiona)
S8E20 / 13 Apr 2018
Ahuwale ka nane huna (The Answer to the Riddle Is Seen)
S8E21 / 20 Apr 2018
Ka Hana a ka makua, o ka hana no ia a keiki (What Parents Do, Children Will Do)
S8E23 / 04 May 2018
Waiho wale kahiko (Ancients Exposed)
S8E25 / 18 May 2018
Season 9
Ka ʻowili ʻokaʻi (Cocoon)
S9E1 / 28 Sep 2018
Ke kanaka i hāʻule mai ka lewa mai (The Man Who Fell from the Sky)
S9E2 / 05 Oct 2018
Aʻohe mea ʻimi a ka maka (Nothing More the Eyes to Search for)
S9E5 / 26 Oct 2018
Aia i Hi‘ikua, i Hi‘ialo (Is Borne on the Back, Is Borne in the Arms)
S9E6 / 02 Nov 2018
Pua aʻe la ka uwahi o ka moe (The Smoke Seen in the Dream Now Rises)
S9E7 / 09 Nov 2018
Lele pu na manu like (Birds of a Feather)
S9E8 / 16 Nov 2018
Mai ka po mai ka ʻoiaʻiʻo (Truth Comes from the Night)
S9E9 / 30 Nov 2018
Pio ke kukui, poʻele ka hale (When the Light Goes Out, the House Is Dark)
S9E10 / 07 Dec 2018
Hala i ke ala oʻiʻole Mai (Gone on the Road from Which There Is no Returning)
S9E11 / 04 Jan 2019
Ke iho mai nei ko luna (Those Above Are Descending)
S9E13 / 18 Jan 2019
Ikiiki i ka la o Keawalua (Depressed with the Heat of Kealwalua)
S9E14 / 01 Feb 2019
Hoʻopio ʻia e ka noho aliʻi a ka ua (Made Prisoner by the Reign of the Rain)
S9E15 / 15 Feb 2019
Hapai ke kuko, hanau ka hewa (When Covetousness is Conceived, Sin is Born)
S9E16 / 22 Feb 2019
Eʻao luʻau a kualima (Offer Young Taro Leaves To)
S9E17 / 22 Feb 2019
Pupuhi ka heʻe o kai uli (The Octopus of the Deep Spews Its Ink)
S9E19 / 15 Mar 2019
Ke ala o ka pu (Way of the Gun)
S9E20 / 05 Apr 2019
He kama na ka pueo (Offspring of an Owl)
S9E21 / 12 Apr 2019
O ke kumu, o ka mana, hoʻopuka ʻia (The Teacher, The Pupil - Let It Come Forth)
S9E22 / 26 Apr 2019
Hoʻokahi no la o ka malihini (A Stranger Only for a Day)
S9E23 / 03 May 2019
Hewa ka lima (The Hand Is at Fault)
S9E24 / 10 May 2019
Hana Mao ʻole ka ua o Waianae (Endlessly Pours the Rain of Waianae)
S9E25 / 17 May 2019
Season 10
Kuipeia e ka makani apaa (Knocked Flat By the Wind; Sudden Disaster)
S10E2 / 04 Oct 2019
E uhi ana ka wa i hala i na mea i hala (Passing Time Obscures the Past)
S10E3 / 11 Oct 2019
Ka ʻiʻo (DNA)
S10E7 / 08 Nov 2019
Ka laäʻau kumu ʻole o Kahilikolo (The Trunkless Tree of Kahilikolo)
S10E9 / 22 Nov 2019
O ʻoe, a ʻowau, nalo ia mea (You and Me, It is Hidden)
S10E10 / 06 Dec 2019
Ka i ka ʻino, no ka ʻino (To Return Evil for Evil)
S10E11 / 13 Dec 2019
Ihea ʻoe i ka wa a ka ua e loku ana (Where Were You When the Rain Was Pouring?) (I)
S10E12 / 03 Jan 2020
Loa’a pono ka ‘iole i ka punana (The Rat Was Caught Right in the Nest)
S10E13 / 10 Jan 2020
He waha kou o ka heʻe (Yours is the Mouth of an Octopus)
S10E15 / 07 Feb 2020
He kauwa ke kanaka na ke aloha (Man is a Slave of Love)
S10E16 / 14 Feb 2020
Nalowale i ke ʻehu o he kai (Lost in the Sea Sprays)
S10E18 / 28 Feb 2020
E hoʻi na keiki oki uaua o na pali (Home Go The Very Tough Lads of The Hills)
S10E19 / 06 Mar 2020
He puheʻe miki (A Gripping Cuttlefish)
S10E20 / 13 Mar 2020
Aloha (Goodbye)
S10E22 / 03 Apr 2020
Alex O'Loughlin
Steve McGarrett
Scott Caan
Danny 'Danno' Williams
Ian Anthony Dale
Adam Noshimuri
Meaghan Rath
Tani Rey
Beulah Koale
Junior Reigns
Kimee Balmilero
Noelani Cunha
