Medium teen cast on Law & Order: SVU

Sep 29, 2011 at 8:37 p.m. ET

Medium is crossing over into Law & Order: SVU territory. Find out which star of the canceled show will be making an appearance on SVU.

Sofia Vassilieva

Actress Sofia Vassilieva, who played Patricia Arquette's daughter Ariel Dubois in Mediumfor six seasons, has been cast in an emotional role on an upcoming episode of Law & Order: SVU.

Vassilieva, 18, will be playing a middle-class teen that comes from the suburbs to New York City on a piano scholarship when she is attacked and raped in her apartment. Andre Braugher (Men of a Certain Age) will be making his debut performance as a defense lawyer that is hired by her attacker.

The young actress is used to emotional roles, as she also played Kate, a girl with leukemia, in the movie My Sister's Keeper, starring Cameron Diaz.

Law & Order: SVU is gearing up for big changes next season, as Christopher Meloni, who has played Detective Elliot Stabler for twelve years, will be leaving the show.

"It is true -- 12 great years and time for the next chapter," his rep reports.

Mariska Hargitay will continue to be on the show -- but it will be scaled back so she can spend more time with her family. Jennifer Love Hewitt is rumored to be in talks to have a lead role in the show.

Photo: WENN