The Sweetness at the Bottom of the Pie by Alan Bradley
My rating: 5 of 5 stars
This is a very charming mystery. The child protagonist is very well done. The things she realizes and doesn’t realize match her character, a mark of authorial care. She also has that obsessiveness with her hobby (poison) that endears you to people. Even if it’s a creepy hobby.
The depiction of 1950s England is pretty fun, too.
A murder mystery in which stamp collecting is an important feature. Could there be anything more Golden Age of the Detective Novel? Agatha Christie would be proud.