Mary Reeser

In 1951, a 67-year-old woman named Mary Reeser was found burned to death in her house after her landlady realized that the house's doorknob was extremely hot. Her remains completely burned into ash, with only one leg remaining. Her chair was also destroyed. Detectives found her temperature to be around 3,500 °F, but everything else in the room was found intact. A common theory is that she was smoking a cigarette after taking sleeping pills, and then fell asleep while still holding the burning cigarette, which could have ignited her gown, ultimately leading to her death.