Fascinating perspectives on one of the most notorious murder cases of 19th century America.

Nearly a century later, their grisly crime remains as mystifying as ever.

Lee's murders in miniature changed the way we interpret crime scenes.

This copycat ripper claimed nearly three times as many victims as his Victorian predecessor—but he made one crucial mistake. 

His true identity remains unknown to this day.

Was it a terrible accident, or something more sinister?

A bright light was extinguished far too early by the Manson Family.

Buried in this seemingly idyllic setting are some very horrific events.

The four-year-old's 1874 disappearance was America’s first widely publicized kidnapping for ransom.

These cold cases chill us to the bone.

Go inside the controversial murder case that shined a light on the American conscience.

The surgeon's brutal deeds earned him a savage nickname.

After signing the biggest deal of his life, Ambrose Small walked into a snowstorm and was never seen again.

The Codex Gigas is the largest illuminated manuscript in the world, but that’s not what makes it famous.

The killers behind these terrifying crimes remain unidentified to this day.

The "Ogress of Reading" was rumored to be responsible for the deaths of 400 children.

From a cult-leading serial killer to a moonlit murder spree that remains unsolved to this day.

The secret locked in her mansion attic was so vile, it inspired decades of ghost stories, crime books, and even a character on American Horror Story.

Up to 200 victims may have died at his 1890's Chicago "Murder Castle."

Hallie Rubenhold retraces the footsteps of the five victims murdered by London’s infamous serial killer.