A Scandal in Bohemia

[Rose]

Holmes is hired by the King of Bohemia to recover blackmail evidence, held by the woman whom the king once promised to marry, but who he abandoned for a woman of noble birth.

[Barbara]

There's a lot of discussion when Holmes says in Five Orange Pips that he was beaten three times by men and once by a woman whether or not the woman was Irene Adler.
I like the Granada episode.