Hawaii Five-0 (2010) Season 5 features 25 episodes centered on high-stakes investigations across the Hawaiian Islands, including the hunt for Danny’s brother and a final, brutal showdown with Wo Fat in the 100th episode. Key developments include Kono’s marriage to Adam Noshimuri and major, long-term secrets emerging within Danny's family in the season finale. Detailed episode summaries can be found on the Hawaii Five-O Wiki . Hawaii Five-0 (TV Series 2010–2020) - Episode list - IMDb