I have always heard the prince was not who he said he was. It's a great mystery no one will really be able to tell us what is truth and what is myth. I enjoyed the book for that main reason and to learn more about Catherine. She truly believed who Richard was and loved him until her death. Even though she married 3 times after, she still held a spot in her life just for him. Sandra writes as if she lived in the same era. The descriptions are so detailed you can easily imagine yourself sitting beside or walking along with the characters.
The research as you can tell from the book is well-played out. I will be reading the other books Sandra has out as they do keep you turning the pages.