Hawaii Five-0's Wo Fat mystery was five years in the making, but Steve McGarrett will finally find out the truth about his nemesis in the series' 100th episode.

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The Navy SEAL spent the last four seasons slowly unspooling the cases of Wo Fat (Mark Dacascos) and Shelburne, a hunt that led him to reunite with his mother and question a possible genetic link with the master criminal. When Hawaii Five-0's 100th episode roles around, McGarrett's (Alex O'Loughlin) hard work will finally pay off.

"I'll tell you this: If there are any lingering questions for people who have been loyally watching the show from the beginning, they're all going to be answered in the 100th episode" said executive producer Peter Lenkov, according to TV Line. "There really will be no more questions, as to, 'Are [Steve and Wo fat] related?' and 'What is Wo Fat's relationship with Steve's mother?' ... That's all going to come to a head and be resolved."

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The untitled episode will start filming in mid-September and will air as the seventh episode of season 5.

Find out more when Hawaii Five-0 returns to CBS on Sept. 26 at 9 p.m. ET.

Tags
Hawaii Five-O, Television, CBS