Hawaii Five-0 will bring the Wo Fat story to a conclusion in the 100 th episode, and the milestone now has a title and an air date.

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Enigmatically titled "If, Perhaps," the episode will air as the seventh of season 5 on Oct. 7 at 9 p.m. ET, according to ET.

Directed by Larry Teng ("Ho'onani Makuakane," "He Weio 'oihana"), "If, Perhapse" will start filming in mid-September.

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"There it is #H50 fans... Episode 100," tweeted director Larry Tang alongside a photo of the title page. "Y'all gonna lose yer sh-t. #Epic."

As for the plot, showrunner Peter Lenkov recently promised that the episode will be particularly revealing.

"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."

Find out more when Hawaii Five-0 returns to CBS on Sept. 29 at 9 p.m. ET. Click the video below to see a preview for the premiere, ""A'ohe kahi e pe'e ai (Nowhere to Hide)."

Tags: Hawaii Five-O television CBS