The other Boleyn girl is a wonderful book because of the glimpse it gives you of history you never thought about. when you look at the known history afterwards, it is indeed an interesting question: why didn't henry marry the girl who had already proven fertile? Mary had already given him a son, because writings of the time tell us of little Henry Carey who bore such a strong resemblance to King Henry when he grew up.It's an interesting book with many layers in it, there are so many beautifully described feelings and emotions in all the characters, you can read it again and again and always find something new in it. the rivalry of the two sisters is portrayed in an exciting way, all the time you know they must love each other and it's interesting to see how ambition can drive people so far apart from each other and from themselves.in the end, it's just a lovely story, really a book to read in one go.