From villains to heroes, the cast of "Law & Order: SVU" has showcased remarkable versatility throughout the show's long run.  Peter Scanavino's journey from antagonist to Detective Carisi highlights the series' ability to subvert expectations, while Kelli Giddish's portrayal of both victim and detective reflects the depth of character exploration within the narrative.  Join us as we delve into the fascinating transformations of these actors on the iconic crime drama...