"It was I killed the old pawnbroker and her sister Lizaveta"
Fyodor Dostoevsky by Vasily Perov
This is a famous line from Dostoevsky's Crime and Punishment.
In the novel, the student Raskolnikov murders with an axe an elderly pawnbroker, and then her sister, who stumbles into the middle of the crime. He does this not simply to steal the pawnbroker's money, which he never uses, but also as a manifestation of his philosophy that some people are not morally obliged to follow the laws which govern society. The murder happens at the beginning, so that Raskolnikov's struggle with his guilt becomes the main focus of the novel.
Crime and Punishment is seen as an important influence on The Secret History, as both describe the psychological effect of murder on murderers.