Extras
The Black Death may have killed nearly 50 percent of the Europe's population.
The haunting journal of Agnolo di Tura reveals the horrors of the Black Plague.
Ancient gravestones in Kyrgyzstan hint the Black Death began long before it reached Europe.
To smuggle her encrypted messages beyond the prison walls, Mary must rely on unconventional methods.
Moments before her execution, Mary had one last message to send to the world.
As a child Mary loved writing in code. As a captive queen, it became essential to her survival.
Mary weds Darnley to secure her crown, but her perfect match soon becomes a dangerous mistake.
After months decoding mysterious letters, codebreakers realize they may belong to Mary Stuart.
Tiny lead tokens revealed the first clues to Cleopatra鈥檚 temple fa莽ade in Alexandria.
Could this mysterious crystal head buried in the ruins of Cleopatra's temple depict Marc Antony?