In 1995, Ellis made her professional acting debut appearing as Ariel opposite Patrick Stewart's Prospero in a Broadway revival of william Shakespeare's The Tempest. She later made her screen debut in the episode of Fox police drama series, New York Undercover. In 1996 she had the co-leading role in the independent film, Girls Town alongside Lili Taylor. During the late 1990s, Ellis also had supporting roles in films Ed's Next Move, Desert Blue, In Too Deep, and A Map of the World. From 1996 to 1997, Ellis starred as Officer Leslie Joyner in the ABC police drama series, High Incident, created by Steven Spielberg. The series was canceled after two seasons. In 1999, she had the recurring role of Sharon Young on the ABC legal drama, The Practice.