Rich Sommer

Mad Men's Rich Sommer will guest-star in an upcoming episode of Nikita, TVGuide.com has confirmed.

Sommer will play Malcolm Mitchell, a CIA consultant who helps Nikita (Maggie Q) break into Percy's black boxes. TVLine first reported the news.

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The 33-year-old actor will first appear in Episode 21 for a two-episode arc.

Nikita airs Thursdays at 9/8c on the CW.