She is always the woman.

Irene Adler

“And that was how a great scandal threatened to affect the kingdom of Bohemia, and how the best plans of Mr. Sherlock Holmes were beaten by a woman’s wit.  He used to make merry over the cleverness of women, but I have not heard him do it of late.  And when he speaks of Irene Adler, or when he refers to her photograph, it is always under the honorable title of the woman.”
(A Scandal in Bohemia. Sir Arthur Conan Doyle.)

A Century or so before there were trekkies, there were (and still are) Sherlockians. Nowadays the fictional heroines are very voluptuous and with graphical depictions that leave almost nothing to the imagination. For us there is only one amazing redhead (As I see her) who according to Dr. Watson had a “superb figure outlined against the lights of the hall.” And yet she conquered us with her amazing brain and broke our hearts when she eloped with a stranger. She is the First Love, The One That Got Away, The Dark Secret In Our Hearts.