Thomas Thiemeyer

In 2014, one of his paintings based on the biblical story of Noah was exhibited in an art show in New York City curated by the American film director Darren Aronofsky.

His novels have been translated into English, Spanish, Dutch, Czech, Polish, Russian, Ukrainian, Korean, Italian, Turkish, Chinese, Portuguese as well as Slovenian.

His stories are set in the tradition of classic adventure novels and often deal with the discovery of ancient cultures, including supernatural threats by mysterious powers.

Novels for readers of all ages: Researcher Hannah Peter makes a strange discovery: a Medusa sculpture, with snakelike extremities and a cyclops eye, indicates that there is a cave deep in the mountains, where a fantastically beautiful and incredibly dangerous object is located.

Along with a Japanese crew, an attractive U.S. Marine officer, and a somewhat shady Swiss professor, Konrad Martin, Ella and her team descent to the deepest spot on earth and barely escape disaster: They find a gigantic, perfectly round stone that reacts to their probing with a deadly heat ray.

What hardly anyone knows is that hidden away in the mountains of Switzerland, there is an underground lab, where scientists are working on a similar, though smaller ball of stone, found decades earlier next to the corpse of a geologist.

What she doesn't know: The disc is the object of desire of a dark cult, lurking in the caves of the Harz mountains, having waited for a long time to celebrate an all-destructive ritual.

Despite threatening solar activity and strange weather phenomena, the team travels to the East African Rwenzori Mountains to locate the missing persons, and an adventure starts that takes Amy to the limits of her mind.