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.
Cathleen Schine Cathleen Schine (born 1953) is an American author of several novels, including "Rameau's Niece" (1993).