I had Annunaki all worked out before I even wrote Kr'agh (the 1st book written in the Gods of Sumer series), but I wasn't sure whether to put it down in novel form. However, my associates and test readers kept asking, "so how did those mysterious artifacts in the Kr'agh chapter headings get there?"

All I could think in response was, "Oh, bugger! Better write a prequel."

Well, it turned out that I could write four prequels and a few science papers. Happily, for both readers and the academia, I found that the task was doable in two books (but I was forced to leave out a lot of interesting information). If the books sell, I'll probably be forced to write a "science behind the stories".

Annunaki is the first of the prequels; the second is Buzur.