IF I GO MISSING: Tanya Rider

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

In the 1980s and early 1990s, a serial predator targeted young girls in the suburbs of Melbourne, Australia. He wore a mask and left little evidence behind. Investigators described him as calm and calculating, earning him the nickname, “Mr. Cruel.” More than three decades later, ...  Show more

When two women are viciously gunned down in a Pennsylvania state forest, authorities are left chasing a man who knows the mountains like the back of his hand. The motive behind the slaying is dubbed a hate crime and the lone survivor ensures the world knows it.

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A Canadian park ranger and his wife are gunned down inside their cabin in Riding Mountain National Park. For 90 years the suspect has eluded Royal Canadian Mounted Police investigators…and the reason may be hiding in several pages of the lawman’s diary that the killer removed ...

In May 1990, the resort town of Banff, Alberta Canada was gearing up for a busy tourist season, but the horrific stabbing of a young female taxi driver brings everything to a screeching halt. The perpetrator remains on the loose for nearly two years. Detectives in a race again ...

No one had seen 8-year-old Relisha Rudd for weeks before she was finally reported missing in March of 2014. So where was she? Why did it take so long for anyone to notice? And who was to blame? Today’s episode explores what can happen when the systems built to protect families ju ...  Show more