Margot Knight is an Australian actress, best known for playing two roles in two highly popular television serials. In Prisoner, she played inmate Sharon Gilmour in 1980 and junior prison officer Terri Malone in 1985. In Neighbours, she played Jean Richards in 1986 and Tracey Cox in 1997. Her Prisoner appearances are notable because in addition to being one of the few cast members to play both a prisoner and a prison warder in the series, both of her roles were as the lesbian love interest to the show's main lesbian character at the time. Sharon Gilmour was the scheming girlfriend of long-term inmate Judy Bryant, and Terri Malone was a young prison officer who moved in with warder Joan Ferguson. It was during this period of the show that Joan kept the use of her black leather gloves to a minimum inside the prison as she finally had a partner she could wear them for at home. This led to a very brief period of relief to the prisoners, especially the young ones.