Law and Order: SVU - Episode 9.17 - Authority

ENGINEER MERRITT ROOK (GUEST STAR ROBIN WILLIAMS) PLAYS DANGEROUS MIND GAMES WITH HIS FOLLOWERS PUTTING DETECTIVE OLIVIA BENSON'S (MARISKA HARGITAY) LIFE AT RISK IN SVU'S 200TH. EPISODE

When restaurant manager Dwight Lomax (guest star Scott Adsit “30 Rock”) is caught molesting a female employee, he claims that he was following orders from a “Detective Milgram” over the phone. As detectives Olivia Benson (Mariska Hargitay) and Elliot Stabler (Chris Meloni) delve into the case, they discover “Detective Milgram” was a hoax by engineer, Merritt Rook (guest star Robin Williams). Rook later turns his trial into a media circus by using the courtroom as a soapbox. Rook’s courtroom antics set him free, and with a group of followers, detective Benson and Stabler fall prey to another one of Rook’s psychological schemes leaving the SVU department vulnerable. Also starring: Adam Beach, Dann Florek, Ice-T, Diane Neal, Tamara Tunie, Richard Belzer, and BD Wong.

Source: NBC