Báthory has been labeled by "Guinness World Records" as the most prolific female murderer, though the precise number of her victims is debated. Báthory and four collaborators were accused of torturing and killing hundreds of young girls and women between 1590 and 1610. The highest number of victims cited during Báthory's trial was 650. However, this number comes from the claim by a servant girl named Susannah that Jakab Szilvássy, Báthory's court official, had seen the figure in one of Báthory's private books. The book was never revealed, and Szilvássy never mentioned it in his testimony. Despite the evidence against Báthory, her family's importance kept her from facing execution. She was imprisoned in December 1610 within Castle of Csejte, in Upper Hungary (now Slovakia).