Ms. Williams won't be playing a special victim. She just makes a special guest appearance. Tonight's episode, though, involves...the Internet:

When the pledgemaster of a hardnosed local fraternity is found murdered and sodimized Detectives Benson (Mariska Hargitay) and Stabler (Christopher Meloni) believe the murder to be the result of the victim's Internet porn sight, which feature unwitting college girls at a local bar. However, when the evidence points back to the fraternity, the detectives slam up against the wall of brotherhood as the brothers are less the cooperative especially with the prime suspect being a recently departed pledge.

Does that mean Serena in is an unwitting Internet porn victim? Only tonight's episode will tell! But check out how NBC.com spelled "site" as "sight." That's only something that would happen on...a blog without spellcheck.

Law & Order: Special Victims Unit