CONSPIRACY: The Smiley Face Killer

In July 2015, Mary Yoder, a healthy 60-year-old chiropractor, went to work as usual. Later that day, she began feeling sick. Within 48 hours, she was dead. At first, her sudden decline seemed like a medical mystery. But investigators soon uncovered evidence of poisoning, launchin ...  Show more

In the summer of 2015, Mary Yoder, a healthy 60-year-old chiropractor, went to work as usual. Later that day, she began feeling sick. Within two days, she was dead. At first, her sudden decline seemed like a medical mystery. But investigators soon uncovered evidence of poisoning, ...  Show more

The case of who murdered Julie Williams and Laura Winans at their campsite by a peaceful mountain stream inside Shenandoah National Park in 1996 remained a mystery for almost 30 years. The brutality of this couple’s slaying baffled state and federal investigators and several k ...

Could it be? Is there a serial killer stalking college aged men who leaves a smiley face signature where he dumps his victims? Over the past few decades, there's been dozens of cases where good looking, successful young men will mysteriously disappear after a night out with frien ...  Show more

In 2017, an aspiring teenage artist was invited to come out to an art college in Florida for a personalized tour of their campus. They told him to bring along some of his best artwork to show the staff, and so the teen decided he would make a special papier-mâché mask just for ...

In the winter and summer of 1999, a serial killer struck four times in the span of six months inside Yosemite National Park. His spree of brutal murders left FBI agents and local law enforcement searching for leads across the state of California. Taunting letters from the perp ...