Writing
Madness Rules
1947 · Novel
Sergeant Studer
1939 · Novel
Kriminalassistent Bloch
1943 · Novel
Matto regiert
1980 · Novel
Der Chinese
1979 · Novel
Studers erster Fall
2002 · Novel
Kein Zurück - Studers neuster Fall
2007 · Characters
Krock & Co.
1976 · Novel
