A string of murders occur that mirror those perpetrated by the Whitechapel Ripper. Through his experiments using psycho-analysis Dr Pritchard finds a deadly violence in one. Since he delves into the recesses of her head he finds that Anna is owned by the spirit of her dead father, willing her to perpetrate acts of savagery that is gruesome over which she does not have any control. However, the chilling revelation of is her father's individuality : Jack the Ripper himself.