1. Raman Raghav:Also known as the “Stoneman,” he operated in Mumbai during the mid-1960s. He is believed to have killed at least 41 people using a stone or other blunt objects, mainly targeting homeless individuals and slum dwellers.
2. Thug Behram:He is also known as Buhram Jemedar, was a famous serial killer and leader of a gang of thugs called the Thuggee. He is believed to have killed at least 931 people by strangulation using a handkerchief or a noose.
3. Amardeep Sada:A child serial killer who operated in the state of Bihar in 2007. He was just eight years old when he killed three children, all of whom were younger than him. Sada was believed to have committed the murders for pleasure.
4. Darbara Singh:Famous serial killer of Punjab who is believed to have killed at least 17 women and was known for his brutality, including decapitating his victims and leaving their heads on display.
5. Cyanide Mohan: Mohan Kumar, was a serial killer who is believed to have killed at least 20 women by luring them with the promise of marriage and then poisoning them with cyanide.
6. Killer Sisters:Renuka Shinde and Seema Gavit kidnapped 13 children and used them for thievery and begging. When refused to cooperate, children were brutally murdered and their corpses disposed of.
7. Cyanide Mallika:K D Kempamma, called ‘Cyanide Mallika’ killed 6 women. She targeted female devotees in temples in Bengaluru, persuading them to perform pujas and in the process would then ask them to drink 'holy water' and food spiked with cyanide.
8. Bhagaval Singh and Laila:Bhagaval Singh, a traditional massage therapist, and his wife Laila, killed two women as part of a human sacrifice ritual for financial progress in Pathanamthitta district of Kerala.
Chandrakant Jha:Known as 'The Butcher Of Delhi' brutally murdered more than 18 migrant workers and scattered the bodies at different locations in Delhi, including outside the Tihar jail.
Raja Kolander:Raja Kolander called a "brain eater", believed he could obtain his victims' qualities by drinking brain soup and allegedly did this to 14 people over many years.