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.
2024
2020
1986
2017
2022
2009
1987
2019
1977
2002
2011
2013
2023
1973
2021
1998
2018
