​From Wikipedia, the free encyclopedia. Kathryn Elsbeth Erbe (born July 5, 1966) is an American actress, known for her role as Det. Alexandra Eames in Law & Order: Criminal Intent, a spin-off of Law & Order and deathrow inmate Shirley Bellinger in the HBO series, Oz. Description above from the Wikipedia article Kathryn Erbe, licensed under CC-BY-SA, full list of contributors on Wikipedia