Eisler refused a half-million dollar advance from a publisher in 2011 in order to begin self-publishing his future novels. In 2013, he re-acquired the rights to his existing best-sellers and began self-publishing those (under new titles) as well.
The short answer is that Rain Fall was my first book. But the more complete answer is that I rewrote it so many times and so thoroughly before it was finally published that it might have been my fourth or fifth book by the time I got it right.