Indian serial killer who murdered at least 41 people in Mumbai, operating under the guise of a beggar.

French-Indian serial killer known as "The Serpent," who targeted Western tourists in Asia in the 1970s.

Canadian serial rapist and murderer, known for killing at least three young women with his wife Karla Homolka.

Canadian serial killer who assisted in the rape and murder of her sister and two other young girls.

Canadian serial killer, convicted of killing at least six women, with estimates suggesting he may have murdered up to 49.

Canadian serial killer, convicted of murdering 11 children and young adults in the early 1980s.

Canadian serial killer, convicted of the murders of at least three women in British Columbia.

Canadian man who was convicted of the murder of a young woman in the 1990s.

American serial killer, known as the "Angel of Death," who murdered at least 37 patients in hospitals.

Canadian serial killer, responsible for the deaths of three children and several other violent crimes.