Mazur did not act on screen over ten years after Night of the Living Dead was released, before making a guest appearance in the television series Hack in 2003. Since then she has guest starred in Numb3rs, Joey, CSI: NY, CSI: Miami, Medium, Criminal Minds, Law & Order: LA, The Mentalist, Bones and the J. J. Abrams-produced unsold television pilot Anatomy of Hope. She also had recurring roles in Crash (2008–2009) and Pretty Little Liars (2010–2012). Her film credits include Over Her Dead Body (2008), the direct-to-video film The Funeral Planner (2010), and A Leading Man (2013). Mazur is an alumnus of both Carnegie Mellon University and Yale School of Drama. She has also acted on stage.