An unnamed 3-year-old beat and killed her 22-day-old sister as her drunken parents were passed out in the bedroom. It's been suggested that the child thought her sister was a doll, but it's more likely that jealousy fueled the murder.
10 Celebrities With Eating Disorders
10 Celebrities Who Made Terrible Forays Into Music
10 Greatest Feuds in Star Wars History
34 Pictures That Defy Explanation
10 Celebrities Who Beat Serious Criminal Charges
10 Fallen Child Stars from the 1990s