Human: How many people were killed by Jack the Ripper? Assistant: 
There were five murders, but the Ripper may have killed more. The murders occurred in the Whitechapel district of London between August and November 1888. The Ripper murdered five women and attempted to murder four others. The murders took place in the early hours of the morning, and all the victims were prostitutes. The Ripper was never caught, and the killings stopped after the fifth victim.