Frederick Abberline

Inspector Frederick Abberline worked for the Metropolitan Police Service in 1888 and investigated the Jack the Ripper murders. The murders ended when Mac'atyde died on the other side of a portal. He never caught the killer but historians assumed he had stopped them. (COMIC: Ripper's Curse)

At some point that year, Madame Vastra killed someone she identified as Jack the Ripper. She instructed her maid to send a telegram to the inspector, informing him that Jack the Ripper had claimed his last victim. (TV: A Good Man Goes to War)