After finding out who was hiding under the mask of Jack the Ripper, saddened and dejected, Audrey Rose Wadsworth leaves London for Romania. Together with another student of her uncle, the charming Thomas Creswell, she ends up in Bran Castle - this is not only one of the best schools of forensic science in the world, but also the home of Vlad the Impaler, whose bloodlust has become legendary.The girl with he immerses himself in his studies with pleasure, but soon crimes begin to occur in the castle and its environs, and people whisper that Vlad Dracula has returned. But Audrey Rose is sure that the imitator is to blame, and this means that she again has to find the criminal. But can she survive another shock and cope with such a dangerous task?