When life got tough, Kate Warn got tougher. She became a spy and agent at 23. And in 1861, her boss tasked her with saving the president elect's life. 

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The Wild West. Home to legends — and one of the most bizarre stories of an outlaw ever told.

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Arsenic was called the inheritance poison - and for good reason. And killers who tried it once were likely to try it again.

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The people of Peshtigo, WI knew the dangers and ignored the signs until it was too late. 

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Sometimes, everyday heroes come from the most unusual places. 

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America's dark history of a time when society turned to eugenics in an attempt to stamp out mental illness.

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In the 1950s, the CIA was on a quest to create a method of mind control using LSD. Over the next 20 years, the experiment added torture, emotional and sexual abuse, and murder to the experiment. 

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Prohibition, extortion, and street gangs were common in New York during the 1930s. But none caught the attention of the American public the way Murder Inc did.

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A day of sunshine and picnics turns into one of the deadliest boating accidents in American history.

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Robert E. Lee's plans laid out in Orders 191 would have won the war. Then a Union corporal finds a lost copy which should have also ended the war. Along the way to Antietam, mistakes were made.

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