Jill Paton Walsh - The Attenbury Emeralds

I really rather enjoyed this. I was not sure if I was going to, I have rarely liked anything sequelled or prequelled  by a classic author but this worked well for me.
In this novel it is 1951 and Lord Peter is of course much older and he and Harriet are more concerned with their family than mysteries but this cleverly links to an old case from 1921.
I have ordered her other books but also the originals by Dorothy L Sayers from the library and will let you know how I get on with them!