Georgette Heyer

 SUPERINTENDENT HANNASYDE MYSTERY Series:

1. Death in the Stocks   ’35
2. Behold, Here’s Poison!   ’36
3. They Found Him Dead   ’37
4. A Blunt Instrument   ’38

INSPECTOR HEMINGWAY MYSTERY Series:

(I think this is a continuation of Superintendent Hannasyde Mystery Series. Hannasyde is Hemingway’s superior. Initially, I had all eight of the mystery books in one long list…)

1. No Wind of Blame   ’39
2. Envious Casca   ’41
3. Duplicate Death   ’51
4. Detection Unlimited   ’53

STAND ALONES:

Footsteps in the Dark   ’32
Why Shoot a Butler?   ’33
The Unfinished Clue   ’34
Penhallow   ’42