This is one of what I like to call my Twilight Zone T-Tales. as I describe it on Amazon:
John Templeton was an acclaimed author with a problem. His reputation was in tatters and his career was in jeopardy. Could the mysterious Repairer of Reputation help him before it was too late? John soon learned that it was indeed possible. But at a cost. And soon, John Templeton was replaced on the best-seller lists. By Jane Templeton–a beautiful and feminine version of the disgraced author, offered to the public as the long-hidden sister who actually wrote John Templeton’s best-sellers. But as that former life fades into a dream, Jane Templeton finds there is a price for such miraculous services and that payment must be made when due.
A Transgender Tale full of dark twists and turns, with echoes of Lovecraft and Robert W. Chambers–a tale of erotic horror and cosmic weirdness, where love may not be enough to triumph over an ancient evil
Transgender Tales 