Armando Gallo/Retna
People Staff
March 18, 2008 12:00 AM

Robin Williams has signed on to guest star in the 200th episode of Law & Order: SVU, PEOPLE has confirmed.

The show, scheduled to air April 29, will have the comedian playing the dramatic role of Merritt Rook, an engineer whose life takes a profound turn after a dramatic loss. While the script is still in the works, word is that Williams winds up in quite the cat-and-mouse chase with Mariska Hargitay‘s Det. Olivia Benson and Chris Meloni‘s Det. Elliot Stabler. —Mark Dagostino

Armando Gallo/Retna

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