It was a crime which shocked Britain. In 1878, a widow was killed in her own home - and the killer was her own servant. This was a murder which struck at the heart of Victorian society, at the sanctity of the home and the rigid divides between the classes. For the young Kate Webster did not only kill and dismember her employer - she stole her clothes, her property and her identity. And to the Victorians that was almost more monstrous than the murder itself.