Elizabeth Bathory is said to be arrested at her Čachtice Castle in the Kingdom of Hungary (now Slovakia) in 1610. Known in popular legend as The Blood Countess or Countess Dracula, she is considered the most prolific female serial killer in history and served as inspiration for numerous horror novels and movies.
This Day in Halloween: Elizabeth Bathory -- a.k.a. The Blood Countess -- is arrested at her castle in what is now Slovakia in 1610. / Illustration by Madison Kemp