[wayrad]

Georgette Heyer wrote four or five mysteries that are very enjoyable (and quite funny). They can be read in any order, although I recommend not starting with the relatively weak Footsteps in the Dark.

Another author you might enjoy is Patricia Wentworth, whose detective is the retired governess Miss Silver.

I also recommend Cyril B. Hare, who wrote mysteries with a legal background, set in England during and just after WWII.

Edited to add: And how could I forget John Dickson Carr? Amidst the hysteria and purple prose, you'll find some of the most original and ingenious puzzles in the literature.