Prior to her work on Star Trek, Mosiman appeared in episodes of Knot's Landing (1982, with J.D. Hall), Dallas (1983, with Susan Howard and John Beck), Hill Street Blues (1985, with James B. Sikking, Barbara Bosson, Brent Spiner, Barry Kivel, and Patti Tippo), and Remington Steele (1986, with Fran Bennett and Clyde Kusatsu).