Starts off strong with coverage of the ice ages and the early habitation of Scotland, and finishes well with the coming of the Romans through to the final Pictish kingdoms around 800. The middle, though, suffered from what I think is quite common in popular prehistories: plenty of conjecture, set off by overly frequent use of 'they must have...' and 'no doubt...'. Still enjoyable, but there were times when I wasn't really sure what I was reading.