George Cranleigh

George Cranleigh was an explorer and botanist. Scion of an aristocratic Oxfordshire family, he was the son of Lady Cranleigh and brother of Charles Cranleigh. He was engaged to Ann Talbot.

History
After returning from a trip to the Amazon, searching for the black orchid, he was deranged and disfigured. He had been captured, tortured and mutilated by the natives in the jungle. A friendly tribe returned him home where the engagement was cancelled. George was still in love with her and so stalked her round the house and murdered some of the servants. He captured Nyssa mistaking her for Ann, he took her to the roof and was followed by Charles and the Doctor, he soon realised it was not Ann. He returned Nyssa to the Doctor but then tripped and fell from the roof to his death. He was the author of the book Black Orchid. (DW: Black Orchid)

Behind the Scenes
To preserve the mystery of his character's identity, Gareth Milne was credited as The Unknown for Part One and in Radio Times, and as George Cranleigh for Part Two.