Prison Valley in Fremont County, Colorado, has housed some infamous criminals, including drug lord El Chapo and Unabomber Ted Kaczynski. The desolate mountain region of the Colorado Rockies is home to 15 high security prisons, more correctional facilities than any other in the United States. The valley includes America’s only Federal Supermax. Investigation Discovery‘s upcoming series Prison Valley will look at the world outside the walls. The six-episode series premieres Tuesday, September 3rd at 10 p.m. ET.

“Residents of have learned the hard way that when you invite evil in, it stays,” reads the press statement. The valley itself is a safe community where residents look out for one another. “In a town where you’re surrounded by prisons, how does someone get away with murder?”

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Family, police, witnesses, lawyers and journalists in Prison Valley will discuss the murders that occurred in their town, “a place that is ultimately the monstrous force that ties all of these murders together,” according to the press statement. Each episode will explore the psychologically complex homicides that took place in Prison Valley. The show will probe the carefully planned assassination of Prison Valley’s Head of Corrections, as well as “an infamous Colorado love-triangle murder case, and a charismatic Jehovah’s Witness who chose murder over divorce.”