Terry Markwell, born Teresa Markwell, is an American born actress, born in Phoenix, Arizona. Terry got her first taste of acting while modeling for Plaza Three, a premiere talent agency in Phoenix during the late-1970s and early-1980s. Markwell is probably best recognized for having appeared as IMF agent Casey Randall in the 1988-1989 season of Mission: Impossible (1988 TV series) - playing the only IMF agent in a Mission: Impossible TV series and its revival ever caught, killed, and disavowed.
Since Mission: Impossible, Markwell has only appeared sporadically on the film and television screen and she now primarily runs her own interior design company under the name of "Markwell Design Group".