<Tr> <Th> Succeeded by </Th> <Td> Casey Novak ("Serendipity") (SVU) Christine Danielson (Homicide Bureau Chief ADA) Jo Marlowe ("Torch") (SVU) Rafael Barba ("Twenty - Five Acts") (SVU) </Td> </Tr> <P> Alexandra "Alex" Cabot is a fictional character within the Law & Order universe portrayed by Stephanie March . She is a primary character in Law & Order: Special Victims Unit and Conviction . </P> <P> Cabot first appears in the SVU episode "Wrong Is Right", when she is hired to work with SVU as their permanent ADA overseeing the legality of its arrests, following a rotating mix of ADAs (among them Abbie Carmichael of the original Law & Order). She is a graduate of Harvard Law School, and has an "uncle Bill" who is a federal judge . While Cabot empathizes with the sexual assault victims she deals with, her strict code of legal ethics often forces her to make harsh decisions and judgments that go against her personal feelings . Her moral strictness has garnered her respect within the SVU squad . </P> <P> She does occasionally bend the rules to suit her own notions of justice, however, often with unpleasant results . In one case, she is so determined to put a serial child molester in prison that she aggressively pressures one of the molester's victims to testify, going so far as to threaten the boy with legal action if he does not comply . The victim later attempts suicide, leaving him with severe brain damage and thus unable to testify . She then lies to the detectives about having a search warrant for the victim's home, which results in the molester's conviction on a technicality, but gets her in trouble with her superiors . She is let off with a one - month suspension, but is left feeling responsible for the victim's plight . </P>

Who is alex on law and order svu