Ed Gein was obsessively devoted to his mother, a religious fanatic.
After her death, Gein stayed to himself. No one knew that he spent hours obsessed with sexual fantasies and reading about the female anatomy.
The human experiments performed in Nazi camps also fascinated him.
His mind filled with images of sex and dismemberment and as the mental images merged into one, Ed would reach gratification.
Gein began robbing graves—keeping body parts as trophies, practicing necrophilia, and experimenting with human taxidermy.
He then turned to murder, killing at least two women in 1957.
Gein inspired film characters Norman Bates (Psycho), Jame Gumb (The Silence of the Lambs) and Leatherface (Texas Chainsaw Massacre).
Gein started to visit cemeteries to dig up bodies of women whom he thought resembled his mother best.
The body parts of the two people he killed were scattered all around the town. Police were shocked as they discovered skulls made into bowls, chairs upholstered in human flesh and a belt made out of human nipples when they raided his residence.
To this day, it still remains one of the most disturbing Crime Scenes ever investigated.
He stored body parts with salt to prevent them drying out.
He was arrested and spent the rest of his life in a mental institution.
Source: The Crime Library.