Delfina Gonzales 
Maria de Jesus Gonzales 

Operated a brothel in Guanajuato,Mexico.  When a girl ceased to be
popular with the customers, they killed her.  Killed a few
of the customers too.  Sentenced to 40 years each.


http://www.mayhem.net/Crime/serial.html

http://www.escapee.fsnet.co.uk/frighteners/killers.htm

http://www.homegame.org/news/pseudomel/