9. Juana Barraza, Mexico
Juana Barraza’s first claim to fame was as a Mexican professional wrestler who went by the name of “The Lady of Silence.” But her name then became infamous after she was arrested for the murder of an 82-year-old lady who had been asphyxiated with a stethoscope. Indeed, even before she was caught, the deaths of several elderly women had led the media to dub the serial killer “La Mataviejitas,” Spanish for “old lady killer.”
Barraza faced trial in 2008. Prosecutors claimed she had killed as many as 40 women, all aged over 60. And in the end, she was convicted of committing 11 murders and received a whopping 759-year sentence. The maximum sentence allowed in Mexico is only 60 years. But given that Barraza was 51 years old at the time, she’ll likely spend the rest of her natural life behind bars anyway. And given her crimes, few would argue with that.
8. Catherine Birnie, Australia
Australian couple Catherine and David Birnie hit the headlines in November 1986 when they were arrested for the abduction and rape of 17-year-old Kate Moir. The teenager had taken a lift from the pair before they attacked her. However, she had managed to escape and inform the police. It turned out she was the only one of the Birnie’s victims to survive. Police found four bodies buried in the backyard of their property.