第 4 季 共 22 集
播出时间：2013年9月28日
第 1 集 Aloha Ke Kahi I Ke Kahi (We Need Each Another)
播出时间：2013年9月28日
After McGarrett and Wo Fat narrowly escape from maximum security, gunmen storm Five-0 headquarters, compromising Kono and Adam's secret location in Hong Kong and forcing McGarrett to break the law and turn on his own in order to find a kidnapped Catherine.
第 2 集 A‘ale Ma‘a Wau (Fish Out of Water)
播出时间：2013年10月5日
As the Five-0 team members investigate a murder, they are led to a Texas ranger who came to Hawaii to look for his daughter; Adam and Kono fight to stay alive.
第 3 集 Ka 'oia' i' o ma loko (The Truth Within)
播出时间：2013年10月12日
A conspiracy theorist helps Five-0 when a missing artifact is the key to solving a double murder.
第 4 集 A Ia La Aku (From This Day Forward)
播出时间：2013年10月19日
Five-0 investigates the murder of a wedding crasher, and their prime suspect is the runaway bride. Meanwhile, Danny makes a big decision regarding his relationship with Gabby.
第 5 集 Kupu‘eu (Fallen Hero)
播出时间：2013年10月26日
As Catherine’s seemingly harmless surveillance job takes a deadly turn, Adam considers making the ultimate sacrifice to save Kono.
第 6 集 Kupouli ‘La (Broken)
播出时间：2013年11月2日
When Halloween comes to Hawaii and a zombie-like man is shot, Five-0 races to stop a madman who is conducting experiments on humans.
第 7 集 Ua Nalohia (In Deep)
播出时间：2013年11月9日
While working the murder case of an undercover ATF agent, McGarrett and the Five-0 team are tasked with watching Mary’s newly adopted baby after she gets sick.
第 8 集 Akanahe (Reluctant Partners)
播出时间：2013年11月16日
McGarrett and Grover must work together to protect national security after they are tasked by the Governor to serve a warrant to a young computer hacker.
第 9 集 Hau‘oli La Ho‘omaika‘i (Happy Thanksgiving)
播出时间：2013年11月23日
As Thanksgiving approaches, Five-0 investigates the murder of a secret service agent just as the President travels to Oahu. Also, McGarrett's Aunt Deb visits, bringing with her a shocking secret.
第 10 集 Ho‘onani Makuakane (Honor Thy Father)
播出时间：2013年12月14日
The attempted murder of a Pearl Harbor veteran leads Five-0 to use decades old evidence to investigate a deadly crime committed within the internment camps on Oahu during World War II.
第 11 集 Pukana (Keepsake)
播出时间：2013年12月21日
An investigation involving a potential serial killer puts Chin's life in danger; Grace and Danny find a mysterious puzzle box.
第 12 集 O Kela Me Keia Manawa (Now and Then)
播出时间：2014年1月11日
Captain Grover is aided by McGarrett in his search for a friend who has disappeared, after it seems like he's committed murder. Kono persists in her quest to find Adam.
第 13 集 Hana Lokomaika‘i (The Favor)
播出时间：2014年1月18日
Chin is questioned about his father's murder and how his relationship with Malia and her family could have adversely affected the investigation.
第 14 集 Na hala a ka makua (Sins of the Father)
播出时间：2014年2月1日
An escaped convict who wants Five-0 to prove his innocence abducts Danny and McGarrett; Grace punches a person at school.
第 15 集 Pale'la (Buried Secrets)
播出时间：2014年3月1日
A real estate agent is found dead inside the walls of one of his listings. Meanwhile, Danny's mother makes an unexpected visit and brings with her some shocking news.
第 16 集 Hoku Welowelo (Fire in the Sky)
播出时间：2014年3月8日
A triple homicide is linked to a secret, downed Chinese satellite; Danny's mother goes on a ride-along with Grover.
第 17 集 Ma Lalo o ka 'lli (Beneath the Surface)
播出时间：2014年3月15日
A man is shot as his daughter is abducted; Danny tries to reunite his parents; Jerry finds a code on McGarrett's champ box.
第 18 集 Ho‘i Hou (Reunited)
播出时间：2014年4月5日
Fan-built Episode. Five-0 investigates when the daughter of a macadamia nut tycoon is murdered with a stiletto heel during Chin’s high school reunion.
第 19 集 Ku I Ka Pili Koko (Blood Brothers)
播出时间：2014年4月12日
Five-0 is set up when a bad tip leads them to an abandoned building that is rigged to explode with McGarrett and Danny trapped inside.
第 20 集 Pe‘epe‘e Kānaka (Those Among Us)
播出时间：2014年4月26日
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.
第 21 集 Makani 'Olu a Holo Malie (Fair Winds and Following Seas)
播出时间：2014年5月3日
McGarrett and Catherine travel overseas to Afghanistan to stop the Taliban from harming a young boy whose family saved Catherine's life years ago.
第 22 集 O ka Pili ‘Ohana Ka ‘Oi (Family Comes First)
播出时间：2014年5月10日
When Grover's daughter is kidnapped by an old nemesis, he is forced to help steal $100 million in order to get her back. Meanwhile, Wo Fat escapes prison and heads back to Oahu.
