Countess Dracula by Tony Thorne

"This is the story of Elisabeth Bathory, a 17th-century Transylvanian countess. She was tried as a vampire and became an inspiration for depraved murderers up to the present day. Based on research conducted at archives in Eastern Europe, this account includes both the recorded truth and the legend that has grown up around her." (From Amazon.co.uk)

Paperback Info: ISBN 0747536414, Bloomsbury, 1998