O Sétimo Selo (in English, The Seventh Seal), is a book written by the Portuguese journalist and writer José Rodrigues dos Santos.
Dawson is overwhelmed by the sight of a slab of ice the size of Rhode Island separating from Antarctica, and returns in shock to McMurdo.
World-famous cryptanalyst Tomás Noronha is approached by Interpol agent Alexander Orlov, who hires him for a strange investigation.
Orlov also wants the cryptanalyst's help to decipher a message left by the assassins near the victims’ bodies - an ancient biblical mystery: “666” The Number of the Beast.
The investigation puts him in the track of humankind's biggest challenges in the next few years: global warming and the end of oil.