Anne Detlefsen did not envision their first vacation together like this: Instead of enjoying the sun in Santa Cruz with her, Hermann Pauli has embarked on a quest to find a strange shark that puzzles even the experts at the local Charles Darwin Research Station. Is it possible that marine ecosystems are changing rapidly? Anne suddenly finds herself busy as well. When ships go up in flames night after night off the island, the head of the Kiel homicide division feels compelled to get to the bottom of it. Is the arsonist among the fishermen, who are known to resort to violence to assert their interests? The situation is complicated—both in the water and on land. In his latest science novel, Bernhard Kegel provides a captivating yet factually grounded insight into fascination and depths.