Sheila Dunn Details Cast On MovieCast On TV Name Sheila Dunn Also Known As Birthday 1940-04-11 Deathday 2004-03-03 Gender Female Place of Birth As: Mrs. Tyson1974-12-23The Treasure of Abbo... As: Blossom Lefervre1966-01-29Doctor Who: The Dale... As: Phone Operator1968-12-21Doctor Who: The Inva... As: Petra Williams / Dr 1970-05-09Doctor Who: Inferno... As: Unknown1972-10-14The Fast Kill... As: Petra Williams1963-11-23Doctor Who... As: Dr. Petra Williams1963-11-23Doctor Who... As: Computer (voice)1963-11-23Doctor Who... As: Telephone Operator (1963-11-23Doctor Who... As: Telephone Operator1963-11-23Doctor Who... As: Frau Gehart1981-11-13Kessler...