Across cultures and continents, certain mysteries refuse to be forgotten. Whether involving disappearances, unexplained ...

This Netflix documentary helped locate the unsolved mysteries of a long-missing child, leading to her safe recovery after six years.

Unsolved murders and cases are chilling, even more so when they involve Hollywood and celebrities. Celebrities have money and resources, so even when their cases go cold, it's hard not to feel scared.

"For every mystery, there is someone, somewhere, who knows the truth. Perhaps that someone is watching. Perhaps... it's you." That line was uttered by host Robert Stack at the end of nearly every ...