Four Unsolved Mysteries That Defy Explanation

Over 10,000 people watch a mile-wide UFO glide across the sky. The state governor

sees it. No explanation is ever given. An anonymous writer terrorizes a small

town for 23 years, revealing everyone's deepest secrets in typed letters. They're never identified.

A 600-year-old book sits in a university library. It's written in a language that

doesn't exist. Even modern technology can't decode a single word. And in 1855,

mysterious hoof prints appear across 100 miles of England in a single night, going over rooftops,

through walls and across a two-mile-wide river. These aren't legends. These are documented,

investigated unsolved mysteries, and every single one of them has defeated the best