The Book That Can't Be Read
The Voynich manuscript, described as "the world's most mysterious manuscript", is a work which dates to the early 15th century (1404–1438), possibly from northern Italy. It is named after the book dealer Wilfrid Voynich, who purchased it in 1912. The book is still coded and it's meaning unknown.
This is a National Geographic documentary where scientists try to shed light to the mysterious document.