It's likely you're referring to Jack the Ripper, the infamous serial killer who terrorized London in 1888. If so, here are the five women generally accepted as his victims:
* Mary Ann Nichols
* Annie Chapman
* Elizabeth Stride
* Catherine Eddowes
* Mary Jane Kelly
However, there are also some other possible victims that are debated amongst historians.
To get the information you need, please provide more context about who "Jack" is.