Mariska Hargitay's most famous episodes of "Law & Order: Special Victims Unit" center around her character, Detective Olivia Benson's, interactions with various suspects and victims. Hargitay won an Emmy for 2005's "911," an episode focusing on a lengthy 911 call between Benson and a missing child.
Hargitay debuted as Detective Olivia Benson in the crime drama's 1999 pilot episode, "Payback." Benson supported a woman repeatedly raped by the same man in 2010's "Behave." The character went undercover to expose prison guards suspected of assaulting inmates in 2008's "Undercover," and Benson finally defeated one of her greatest nemeses, rapist William Lewis, in 2014's "Beast's Obsession."