The book summarizes the state of knowledge of the genetic makeup of Scotland. Beyond that, it is actually a very welcome new summary of what is known of the DNA of the British Isles in general. Nice concise survey of Neanderthal DNA and the modern human out-of-Africa bottleneck, and then descriptions of the various waves of migration to Scotland, the rest of Britain, and Ireland. Very up-to-date too. Skilfully written, weaving together genetics, archaeology, history, and topics of interest like red hair. No footnotes, and just a short bibliography. Those familiar with this field will already be familiar with the academic sources of some of the findings. But if not, as a note in the bibliography suggests, the Internet is a vast source of information on this subject. Use of non-glossy paper and a limited number of colour photographs (about 23) has kept the price down, which is also greatly appreciated. I spotted only about three typos in the book, one of which was important: p.65, "mtDNA 2a1" should read (I think) "mtDNA J2a1." I would definitely recommend this as the book for anyone who wants a very readable overview of the DNA of the British Isles.