Multispectral imaging has uncovered that the baffling symbols in the 15th-century document—dubbed the world’s most mysterious manuscript—were scrutinised by its owner, a Prague doctor

Stefan Guzy has scoured archives from the Holy Roman Empire and believes he has traced back the ownership of the mysterious cipher book

Though scientific research has revealed much about the manuscript’s material properties and trajectory, its meaning remains elusive

If bodice-rippers are too boring for your summer reading, take a crack at these other books that have stumped researchers

A German Egyptologist believes he has cracked the code to the enigmatic 15th century illustrated book—but many others have made the same claim in the past and failed