Charles Augustus Milverton was a blackmailer. Milverton extorted money from the families of rape victims and was considered by Sherlock Holmes to be a professional blackmailer. He had a man named Stuart Bloom hold copies of the material, to release in the event of Milverton's incarceration or death. One of his victims, Anthony Pistone, confronted him and punched him, giving him a cross shaped scar with his ring. Milverton was able to stop Pistone by offering a piece of his blackmailing business.