The 100 rooms of the H. H. Holmes house were allegedly filled with trapdoors, gas chambers, staircases to nowhere, and a human-sized stove.

Discover the hidden history of Friedrich "Frederick" Trump who operated hotels and restaurants in the Pacific Northwest but remains best known as the grandfather of Donald Trump.

On April 18, 1906, the Great San Francisco Earthquake devastated the entire city, killing 3,000 people and igniting massive fires that burned for days.

Inspired by a simple idea from female volunteers in 1917, the work of the Donut Dollies spanned decades and helped boost the morale of American soldiers during World War II and beyond.

On March 26, 1997, the Heaven's Gate cult became forever infamous when 39 members were found dead after committing mass suicide. Here's why they did it.

The original America First Committee began as an anti-war movement devoted to keeping the U.S. out of World War II. But it quickly evolved into something far more ugly.

Ivan IV Vasilyevich rose to power in the 16th century to become the first tsar of Russia — and earned the nickname "Ivan the Terrible" along the way.

Slenderman was a popular internet legend created in June 2009. But when two 12-year-olds tried stabbing their friend to death, this mythical creature took on a life of its own.

Before linking with neo-Nazism, skinhead culture started out as an alliance between young English and Jamaican working-class communities in 1960s London.

From the unhinged crimes of Jeffrey Dahmer to the sickening murders of Jack the Ripper, read about some of the worst serial killers in human history.

As legend has it, the flying Mothman terrified countless Point Pleasant residents in the late 1960s. And when the nearby Silver Bridge collapsed, the creature was blamed for the deaths of 46 people.