Alex Mack's Larisa Oleynik Joins Hawaii Five-0

Larisa Oleynik has landed a recurring role on Hawaii Five-0, CBS announced Tuesday.
The Secret World of Alex Mack and 10 Things I Hate About You star will play Jessica Kaye, an ex-CIA analyst and Harvard graduate. As TVGuide.com previously reported, Jessica comes to Hawaii to help McGarrett (Alex O'Loughlin) pursue his arch nemesis, Wo Fat (Mark Dacascos). Wo Fat was also responsible for the murder of Jessica's fiancé, a CIA field agent.

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Oleynik has an option to become a series regular in Season 2, according to TV Line, which first reported the news. The actress, who has also recurred on 3rd Rock from the Sun, most recently appeared on Mad Men as Ken Cosgrove's fiancée, Cynthia, last fall.