Captain Francis Blake, an officer in the British secret services, and Professor Philip Mortimer, a brilliant scientist, regularly find themselves at the center of cases involving espionage, revolutionary inventions, unexplained phenomena, and threats capable of disrupting the balance of the world. Their investigations often bring them into conflict with Colonel Olrik, an enemy as dangerous as he is elusive, and take them from London to some of the most remote places on Earth. Between international conspiracies, scientific discoveries, and archaeological mysteries, Blake and Mortimer face dangers where reason, adventure, and anticipation constantly intersect.