The Servant Girl Annihilator, also referred to as The Austin Axe Murderer, is a still-unidentified serial killer and rapist who was active in Austin, Texas from December 1884 to December 1885. As the killings stopped three years before the murders committed by Jack the Ripper, the police did not understand at the time that they were dealing with a serial killer, and he wasn't identified as such until the 20th century.