Season 19, Episode 121 - "Black Orchid"
1 March, 1982
The Doctor, Nyssa, Tegan and Adric arrive in England in 1925. At a masked ball at Cranleigh Hall a series of murders begins, and Ann Talbot, who is the spitting image of Nyssa, is abducted. The Doctor must uncover the secret the Cranleigh family is hiding from the world.
