By Sandra Gonzalez
Updated January 24, 2012 at 04:00 PM EST
Credit: Todd Williamson/
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Things are about to get a little strange on the final season of In Plain Sight.

Mädchen Amick, better known as Twin Peaks‘ Shelly Johnson, is set for a guest role on the fifth and final season of the USA series starring Mary McCormack, EW has learned exclusively. Amick will play associate director Lisa Ruffino, the second in command at WITSEC, who, according to casting intel, “is a savvy political operator who comes to Albuquerque with news about the office.” Well, that sounds nice and ominous. She will appear in the March 23 episode.

This is not the first USA series in which Amick has appeared. Earlier this season she had a guest spot on White Collar, although, oddly, was not among the cast members to appear in the Twin Peaks-themed episode of Psych, which reunited a number of original cast members. Her other credits include roles on Damages, Californication, and Gossip Girl.

In Plain Sight returns March 16.

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In Plain Sight

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