​From Wikipedia, the free encyclopedia. Kirsty Child is an Australian actress, best known for playing three roles in the cult drama Prisoner. She played two guest roles – prison officer turned drug dealer Anne Yates in 1979, and Glynis Johnson, the sister of an inmate, in 1983. In 1985 she played a more prominent part in the series as supercilious fence Willie Beecham. She returned for a cameo in late 1986. Child acted in the 1975 film Picnic at Hanging Rock and appeared in serial Neighbours a ...