It occurs to me that there are probably any number of people in the world who are convinced I ripped Doppelganger off from the Buffy episode “Doppelgangland.”
Which I did not see until years after I had written the book.
(I mean, two red-haired girls who are alternate reality versions of each other? And one’s a witch? And the other wears black leather and kicks ass? Make Mirage a vampire, and you’re set.)