Five-year-old Robert Turner of Detroit watched as his mother Sherrill died from a heart condition in February 2006 — all because two 911 operators thought his desperate calls for help were a prank.

Lyle and Erik Menendez claimed their mother was a neglectful drunk — and so in August 1989, they got revenge on her and their father.

Read the harrowing stories from people who escaped some of history's most infamous cults.

Before the Inca conquered the Chimú, the coastal Peruvian civilization built the largest mud-brick city in the world. They also partook in the ritualistic mass sacrifice of children.

Rarely found in the Southern Hemisphere, amber can preserve ancient organisms exactly as they were millions of years ago.

Richard “Money Rich” Porter was pulling in $50,000 a week selling crack in New York City in the late 1980s — until he was murdered by his partner Alpo Martinez in 1990.

Even as Aileen Wuornos murdered seven people within the span of just 12 months, her girlfriend Tyria Jolene Moore stood by her before finally cooperating with the police and helping to bring the "Monster" serial killer down.

In the early morning hours of August 5, 1962, Marilyn Monroe was found dead inside her Los Angeles home of an apparent drug overdose — but suspicions of foul play have persisted ever since.

What happened to Jimmy Hoffa, Madeleine McCann, and other victims of famous missing persons cases? Explore their mysterious disappearances and the leading theories behind them.

After being caught with more than half a kilo of cocaine, Tim Allen faced life imprisonment in 1978. So he decided to make a deal — which eventually led to fame and fortune.