- The Roman Hat Mystery 1929
The French Powder Mystery
- The Dutch Shoe Mystery 1931
The Egyptian Cross Mystery
- The Greek Coffin Mystery 1932
- The American Gun Mystery 1933
The Chinese Orange Mystery
- The Lamp of God 1935
- Halfway House 1936
- The Door Between 1937
- The Devil to Pay 1938
- The Four of Hearts 1938
- The Dragon's Teeth 1939
- The Murderer is a Fox 1945
- Ten Days' Wonder 1948
- Cat of Many Tails 1949
- Double, Double 1950
- The Origin of Evil 1951
- The King Is Dead 1952