Inspector Richardson Mystery

1 Richardson's First Case (1933)
2 Richardson Scores Again (1934)
     aka Richardson's Second Case
3 The Case of Naomi Clynes (1934)
     aka Inspector Richardson CID
4 The Case of the Dead Diplomat (1935)
     aka Richardson Goes Abroad
5 The Dartmoor Enigma (1935)
     aka Richardson Solves a Dartmoor Mystery
6 Who Killed Stella Pomeroy? (1936)
     aka Death in the Bathroom
7 The Milliner's Hat Mystery (1937)
     aka The Mystery of the French Milliner
8 A Murder Is Arranged (1937)
     aka When Thieves Fall Out