David Victor Canter is a psychologist that helped police on a case involving two serial killers who attacked numerous women and children in the south of what?
John Duffy and David Mulcahy John Duffy and David Mulcahy (both born 1959) are two British rapists and serial killers who together attacked numerous women and children at railway stations in the south of England during the 1980s. They are known as the "Railway Rapists" and the "Railway Killers".
Felícitas Sánchez Aguillón Felícitas Sánchez Aguillón or Sánchez Neyra (1890 – June 16, 1941) was a Mexican nurse, midwife, baby farmer and serial killer, active during the 1930s in Mexico City, who killed babies in her care. Between 40 and 50 murders were attributed to her. She was also known as ""The Ogress of Colonia Roma"", ""The Female Ripper of Colonia Roma"" and ""The Human Crusher of little angels"".