Classification: History Lite.
The worst thing about this book is Philippa Gregory's involvement, both the introduction and her essay on Jaquetta. The best thing is the final essay by Michael Jones on Margaret Beaufort. David Baldwin's section on Elizabeth Woodville falls somewhere between the two and was okay.
Michael Jones' contribution pushed this up to a three star read for me, before that it was languishing down around the two stars. I only wish I could give it more because his essay was excellent and worthy of a higher overall rating but his colleagues let the side down, especially PG.
If you want my advice, skip this book entirely and go straight to Jones' bio of Margaret Beaufort The King's Mother: Lady Margaret Beaufort, Countess of Richmond and Derby. Other titles by Baldwin may also be worth checking out.