Black Orchid is the fifth serial of the 19th season of the British science fiction television series Doctor Who, which was first broadcast on BBC1 on 1 and 2 March 1982.
The serial is set in an English estate in 1925. In the serial, the alien time traveller the Fifth Doctor (Peter Davison) investigates the murder of two servants during a fancy dress party.
This story was the first adventure for the Doctor to feature no science fiction elements other than the TARDIS and the regular cast since The Highlanders (1966). It is a period adventure set in the 1920s, but not based around any specific historical event. and in Radio Times, and as "George Cranleigh" for Part Two.
Michael Cochrane, who plays Lord Cranleigh, also appears in the 1989 Seventh Doctor serial Ghost Light. He also appeared in the audio plays No Man's Land and Brotherhood of the Daleks. Ivor Salter had previously played the Morok Commander in The Space Museum and Odysseus in The Myth Makers.