This is my first foray into the Thornleigh series by Barbara Kyle and I have to say, I was not disappointed. In fact, it was a wonderful historical novel. Easily read as a stand alone novel. Truth be told, I didn't even know it was part of a series until I read someone else's review.I have long been fascinated with the relationship between Queen Elizabeth I (one of my most favorite historical figures) and her cousin, Mary, Queen of Scots. 'What would it have been like to order the execution of a blood relative?' is a question I have long asked myself as I have read about Elizabeth over the years. In Blood Between Queens, the situation between the two queens is the back drop to a story about a feud between families loyal to each faction respectfully, the Thornleighs and the Grenvilles. I liked the depiction of the famous rivalry between queens played out between these noble families.What struck me is that Kyle knows her history. It is evident that the research was impeccable in the depiction of the historical figures and occurrences, as well in the sights and sounds of that age. I now must go back and read her other books. I can't believe I have not discovered her until now.