His award-winning Gereon Rath series, published by Kiepenbauer & Witsch, consists of "Der nasse Fisch" (2007), "Der stumme Tod" (2009), "Goldstein" (2010), "Die Akte Vaterland" (2012), and "Märzgefallene" (2014), all using Berlin during 1929-1931 as a scenic backdrop.