Michael Massee

Se7en star Michael Massee has been tapped to play one of Fringe's bad guys, TVGuide.com has learned exclusively. Details remain scare, but we're hearing he'll do terrible things to serve his own bent logic.

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"His character promises to be one of the most memorable, guest bad guys we've ever had," executive producer J.H. Wyman tells us. "A terrifying journey with a man pushed to the limits by intense loneliness." 

No exact air date is set, but Massee, whose TV credits include Rizzoli & Isles, FlashForward and 24, is slated to appear in Episode 15 of the fourth season, which returns Friday at 9/8c on Fox.