<human>:  I have a question about the Whitechapel murders. How many people were killed by Jack the Ripper?
<bot>: There were five victims, but the murderer was never caught. The murders took place in the Whitechapel district of London in 1888. The victims were all prostitutes, and the murders were the first of the series of murders that came to be known as the Whitechapel murders.