Ten years later, the book is an updated version of: The Indo-European Elements in Hurrian, that I coauthored with Allan Bomhard in 2009. It further develops the claim that Hurrian is a sister-language of PIE, its closest relative.
It provides extensive chapters on Hurrian morphology and vocabulary, in comparison with Indo-European languages and comparanda. It explains in great detail how Proto-Anatolic became each of the three branches: Hurro-Urartian, Anatolian and Post-Anatolian (so-called “core” PIE). A particularly important point is the verbal system of Hittite, which appears to be perfectly clear within the framework of Proto-Anatolic.
It also explains why the Pontic-Caspian theory must be rejected, as baseless.