Have Dean Koontz and Bernhard Schlink both written at least one novel?
Bernhard Schlink Bernhard Schlink (born 6 July 1944 in Bielefeld) is a German lawyer and writer. His novel "The Reader", first published in 1995, became an international bestseller.
The Last Day of Creation The Last Day of Creation (in original German: "Der letzte Tag der Schöpfung" ) is a science fiction novel by German writer Wolfgang Jeschke, first published in 1981. The English translation was published in 1982 in the USA and Great Britain. In the same year the novel obtained the Kurd-Laßwitz-Preis ("Kurd Laßwitz award").