Born to a German father and an American mother, Rohm was raised in NYC. After her parents' divorce, she was educated at a boarding school in Tennessee and then moved to Miami to try her hand at modeling. When that didn't pan out, Rohm enrolled in college and found her calling when she was cast in her first stage role. Following graduation, she briefly worked as an agent's assistant until she landed her first professional TV job, a 1997-98 recurring role on the ABC serial "One Life to Live". Producer Dick Wolf introduced her to primetime with a lead in the busted Fox pilot "The Invisible Man" (1998). Guest appearances and parts in projects like the NBC miniseries "The 60s" (1999) followed before Rohm landed the recurring role of L.A. police detective Kate Lockerly on the popular supernatural spin-off "Angel" (The WB). Beginning in 2000, she pulled double duty, continuing to make appearances on "Angel" while co-starring as an ambitious Wall Street investment banker on the short-lived TNT drama "Bull". In the fall of 2001, Rohm was cast as a passionate and forthright assistant district attorney on "Law & Order", produced by Dick Wolf. While the actress had the support of the staff and her co-workers, some TV critics were less than impressed with her addition to the series.