Having a friendly relationship with Adolf Hitler, many speculated that the Duke and Duchess of Windsor were involved in a plot to overthrow the British crown during World War II.

Stemming from her own difficult childhood, the British queen and her nine offspring experienced tension and dysfunction from the moment they were born.

After Lee's 'To Kill a Mockingbird' became a best-seller, Capote competed to keep up, eventually putting a wedge between the writers.

The accused killer began living lavishly, only to have the residents of Fall River, including her sister, ice her out.

The 39th president and former first lady have been a couple for more than 70 years.

Branded a "sick comic," the stand-up pushed boundaries with his foul-mouthed routines, which led to his 1964 arrest.

Required to perform safe and clean routines in front of primarily white audiences, the comedian had enough of club owners telling him what to do.

The 'Tonight Show' host declared that the comedienne would be a star, but two decades later, the friends would stop speaking to each other forever.

The personal contents were placed in a box and weren't revealed until more than 100 years after the president's assassination.

Despite JFK's father feuding with the Prime Minister during World War II, the late president idolized and took cues from the British politician.

The Prime Minister was rarely spotted without his favorite accessory — a cigar.

The Nobel Prize winner retreated to the Florida island in the 1920s and ultimately discovered a new muse — the city itself.

The scientist's discoveries and theories laid the foundation for modern physics and astronomy.

It lasted just seconds, but the brief interaction between JFK and Bill Clinton inspired the teen to a life of public service — and helped lead to his own election as president 30 years later.

More than a century after her execution on espionage charges during World War I, the debate over the guilt or innocence of the legendary Mata Hari continues.

The Civil Rights leaders did not see to eye to eye, and their encounter lasted minutes.

The immigrant orphan from the West Indies was one of the most talented and accomplished Founding Fathers. But what stopped him from occupying the highest office in the United States?

The historic site was a place of solace for the former president and his family in good times and bad.

The crash left the painter with life-long pain and injuries that would fuel the vibrant, intensely personal artwork that would make her famous.

With Grant only accepting a total Confederate surrender during the Battle of Fort Donelson, the Civil War changed its course — and gave the future president a new moniker.

Dodging roadblock after roadblock, the "peanut man" was determined to leave a lasting legacy.

The botanist and inventor was unlikely friends with some of the 20th century's most iconic men.

In 1887, 23-year-old reporter Nellie Bly had herself committed to a New York City asylum to expose the horrific conditions for 19th-century mental patients.

With more than 1,000 U.S. patents, Thomas Edison was one of the most successful inventors in history. But did you know that Edison got his start thanks to a good deed performed when he was a teenager?