The first ultra-intelligent machine is the last invention that humanity will ever make. "The Tyranny of the Butterfly," the new thriller by Frank Schätzing. Luther Opoku, sheriff of the sleepy gold mining region of Sierra in the midst of California's mountains, struggles with petty crimes, illegal drug cultivation, and chronic staff shortages. Three hundred miles west, IT visionaries in Silicon Valley compete to create the first ultra-intelligent computer with the aim of solving humanity's great problems. When a biologist mysteriously dies in the forests of Sierra, Luther must realize that his natural paradise has long become a testing ground for unconventional experiments. The investigations take increasingly surreal turns. Soon, he begins to doubt his own sanity. The dead come to life, and time falls apart.