Unravel one of the greatest mysteries of our time!1908, Siberia, Tunguska region: a massive explosion of unknown origin triggers a flaming inferno and leaves death and destruction in its path. Almost 100 years later, this mysterious catastrophe is barely remembered. Even Nina Kalenkov knows nothing of it, until her scientist father suddenly vanishes without a trace.Accompany Nina and her boyfriend Max on a fascinating voyage all around the world. Follow the tracks of the kidnappers through the ancient secret passageways of Irish castle ruins, through the flickering heat of Cuba and aboard the legendary Trans-Siberian railroad.You will soon find there is more at stake here than a single human life.