Although I enjoyed the whole series I have to say Weaver was by far the best. The characters are with us throughout the book (unlike the other books which developed a new cast every few generations) and we get to know them much better. But this story is not about developing character realism. It is a meticulously researched and imaginatively constructed narrative concerning one of the biggest and most written about "what ifs" of our modern times: Could the Nazis have invaded the British mainland? And not only that it weaves, as it were, the unashamed meddling with key episodes of our history into its narrative fabric. This book is not just a page-turner it holds you in its thrall as German and Allied forces clash, not in distant France, but in places like Richborough, Dover and Guildford. This is how it could, possibly even should, have happened.