Hawaii Five-0's "Powehiwehi (Blackout)" will be a nail bitter for Kono fans. Luckily, the writers have a happy ending planned for the intense episode.

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Steve McGarrett's (Alex O'Loughlin) elite team of investigators will track an elusive criminal this Friday, one whose true identity is a mystery. Catching sight of the shadowy figure is grounds for death, and Kono (Grace Park) will make the deadly discovery before the rest of her team.

Don't worry - Kono can kickass and take names with the best of them, and the ending of the 14 th episode will leave viewers feeling hopeful.

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"The endings of #H50 514 & 516 are gonna have you grinning so hard your face is gonna hurt," executive producer Peter Lenkov teased.

Those smiles may come from an advancement in the Kono/Adam (Ian Anthony Dale) storyline. Now that the pair are safely settled back into life in Oahu, Kono will continue to mull over Adam's proposal. Although Kono is worried that Adam's ties to his families past and dangers of her current job will make it difficult to start a family, the pair will broach the subject once more in "Powehiwehi (Blackout)" (see photos above).

Find out more when Hawaii Five-0 airs Fridays at 9 p.m. ET on CBS. Click the video below to see a preview for the series' next episode.