I recently viewed this series again as part of my research for a play I am writing about Christopher Marlowe. I am pleased to say that serious historical sources - primary sources - were consulted by all six writers. Detail after detail in all of the episodes are supported with source material. Elizabeth lived such a rich and fascinating life that the facts provide more drama than a lazy writer could ever belch out of his imagination. Sound, lively history. One of the five best programs ever on television.