Stephan Ludwig was supposed to become a musician. As a child, he learned to play violin, and as a youth double bass. He played in orchestras and later in a punk band. In 2012, the first of his nine thrillers about Inspectors Zorn and Schröder appeared. After a failed trip to Lusatia, which concluded when his car broke down in an opencast-mining district, he decided to write something different for a change. Underground is the result.