Here is the list of cruelest murders in the world history including the crime of killing parents by 29 whacks, house of skin, Ted Bundy series murders, 11 year old killer and the Moor murder.
Lizzie Borden killed parents by 29 whacks
Lizzie Borden, 33, was supposed to kill her father and step mother by 29 axe whacks. Although the murder happened in 1893, a century ago, it was considered as one of the most controversial cases in the world history. It was such a absolutely a cruelest and heartless murder with terrible sense of the father whose face was stabbed into pieces with his left eyes pulled out.

Lizzie Borden

The body of Andrew Borden and Abby Borden, Lizzie Borden's parents.

The Bordens' house in Fall River, Massachusetts, where the murders took place.
House of skin

Edward Gein
Edward Gein could be considered as one of the cruelest murderers in American history. Inspire of the fact that people found evidences against him in only two murders; he was notorious for his strange necrophiliac behaviors such as dug up corpses, skinned his victims and created furniture and clothing from their bodies.

Edward Gein's house of skin

Edward Gein in his house of skin

Bowl made by skull found in Edward Gein's house
Ted Bundy series murders

Ted Bundy
Ted Bundy was a series murderer. He killed many women in over America which lasted for 4 years from 1974 to 1978. After years denying his guilts, Ted finally admitted to killing 29 women. However, up to now, the real number of women he killed was still a mystery.
11 year old killer

Mary Bell
Mary Bell, 11 year old was accused of killing 2 boys named Martin Brown, 4 years old and Brian Howe, 3 years old. These two boys were strangled by Mary Bell in 1968 and both crimes were two months apart.

Mary's case was reported on newspaper
Watch video:
Lizzie Borden: The True Story & The Murder House Today:
Ed Gein:
Ted Bundy:
Mary Bell's Tale:
Cruelest Murders All Times