My own contribution toward augmenting this niche of novelization consists of my 74-page "novmoir" (a novella written as a memoir), titled Conjoined:  The Story of Rex and Roxanne:  The World's First Androgynous Siamese Twins.

Released in July 2010 by Booklocker.com, Inc., this reincarnation-themed paperback also has a lower-cost e-book version available from the producer's web site.

Set in Virginia Beach, Va., the story centers on the question What forces (internal, external -- or both) have conspired to keep these, "the yin-yang twins," unseparated, despite the relative ease by which modern surgery could've done the job ?

Such profundity invites discussion by such reincarnation authorities as Linda R. Backman, Ed.D., of Erie, Colo., whose foreword to the book muses: "Apparently, Rex and Roxy created a complex pre-birth agreement, in defiance of societal norms, to provide potential learning to those with whom they would come into contact demonstrating that interrelationship can, and often does, serve equally as the partners carry out simultaneous roles of both puppeteer and puppet."

Readers may order copies of Conjoined direct from the producer's subpage at http://www.booklocker.com/books/4829.html . Most commercial bookstores can special-order the book for you (ISBN 9781609102418).