A schoolteacher who killed multiple paramours with cyanide; a mother who trained her daughters to kill children; a thug from the 1800s who slaughtered more than 900 people, a manservant who killed girls and devoured their body parts.

If you thought serial killers was a Western phenomenon, think again!

These bone-chilling stories in The Deadly Dozen will take you into the hearts and heads of India's most devious murderers and schemers, exploring what made them kill and why?