Grey's Anatomy's T.R. Knight Returning to TV

NEW YORK - NOVEMBER 21: TR Knight attends the Broadway opening night of "Elling" at the Ethel Barrymore Theatre on November 21, 2010 in New York City. (Photo by Roger Kisby/Getty Images) Photo: Roger Kisby/2010 Getty Images

T.R. Knight will guest-star on Law & Order: SVU next season, thought it's not clear yet which episode he'll be in. The onetime George O'Malley will play a serial rapist — well ... alleged serial rapist — who would no doubt meet his match in Detective Stabler, if only there were still a Detective Stabler, which there is not. Knight was last seen doing some arduous Mamet in 2010, but this is his first TV role since he left Grey's Anatomy in 2009. [TV Guide]