A dead biology graduate, a billionaire investor, a mysterious house and a rare beetle keep detectives Burkhard "Butsch" Schulz and Viola Delbrück busy this time as they finally investigate side by side again.
1987
2024
2025
2022
2009
1993
2017
2021
1998
1986
2023
2013
1957
2015
2012
2011
