Báthory was a powerful noblewoman in the 16th century and is often called the most prolific female serial killer in history, accused of murdering over 600 young women within her castles. Legend claims she believed bathing in their blood would keep her young forever—but it only ensured her place in infamy. Her supposed cruelty has echoed through centuries, inspiring films, plays, operas, television shows, and even video games. She is often called the most prolific female serial killer in history, accused of murdering over 600 young women within her castles. She was imprisoned… but never given a proper trial. And most of the evidence against her came from testimonies taken under torture. So was she one of the most brutal serial killers in history… Or a woman accused without real proof?