Gunn had starring role of Kelly Cochran in the CBS series Dark Justice from 1992 to 1993. From 1996 to 1999, she starred as Detective Cassandra St. John on the USA Network series Silk Stalkings. Gunn also guest starred on In the Heat of the Night, Dream On, Diagnosis: Murder, CSI: Crime Scene Investigation and Crossing Jordan. Her film credits include Night of the Running Man (1995), The Quest (1996), The Nurse (1997), and Getting There (2002).