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.
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All episodes — Season 4
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S4 E1Aloha Ke Kahi I Ke Kahi (We Need Each Another)
Sep 27, 20137.643 min
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 kidn
S4 E2A‘ale Ma‘a Wau (Fish Out of Water)
Oct 4, 20137.844 min
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.
S4 E3Ka ʻoiaʻiʻo ma loko (The Truth Within)
Oct 11, 20137.944 min
A conspiracy theorist helps Five-0 when a missing artifact is the key to solving a double murder.
S4 E4A Ia La Aku (From This Day Forward)
Oct 18, 20137.844 min
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.
S4 E5Kupu‘eu (Fallen Hero)
Oct 25, 20136.844 min
As Catherine’s seemingly harmless surveillance job takes a deadly turn, Adam considers making the ultimate sacrifice to save Kono.
S4 E6Kupouli ‘La (Broken)
Nov 1, 20137.944 min
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.