Content from Red Marble Media

There are six places on Earth believed to be actual entrances into Hell. They include a volcano in Iceland, a cave in the jungles of Central America, and a lake of fire in Africa. According to ancient myth and Christian legend, each is a passage to a terrifying underworld for the damned. Even today, some believe they are still portals. Eerily, they share striking similarities. Visit these six locations, and discover how the concept of Hell emerged in history and why it still evokes fear today.

The true stories of people who lived with a killer. How well do you really know your family? Would you recognize the warning signs? Or would you become entangled in evil?

This harrowing half-hour archive series revisits some of the most brutal killers in modern history, reviewing news footage and the words of the killers themselves to see which terrifying traits each killer exhibited. What are the signs...of evil?

Secrets are never safe from seeing the light of day, even ones that are housed with skeletons and buried six feet under. This haunting, true crime thriller looks at just what happens when a murder investigation exposes secrets that someone wants buried forever.

The first-ever Evil Lives Here aftershow. Through interviews with family members and experts, Linkletter dives deeper into each new Evil Lives Here story to unlock never-before-heard secrets.

A new breed of explorer has taken space travel beyond the moon to unlock and reveal first-ever views of alien worlds and cosmic bodies far beyond anyone's imagination. "Space's Deepest Secrets" shares stories of the men and women who pushed their ingenuity and curiosity to uncover some of the most groundbreaking findings in the history of space exploration. Hourlong episodes cover NASA's New Horizons mission to Pluto, the Hubble Telescope, the twin Voyager explorations, and other past, current and future missions and projects.