A Red Herring Without Mustard by Alan Bradley

Another Flavia de Luce novel.  If you don't know Flavia yet, she is a precocious 11 year old.  She's whip-smart, lippy, and resourceful yet she's at her utmost vulnerable with her distant father and two sisters who constantly taunt her.  She's inherited her love of chemistry from her uncle along with all his beakers and testing chemicals.

I love the Flavia de Luce series.  I've read every one so far and look forward to the next.

In this cozy adventure, we have another splendid romp through 1950s England led by the world’s smartest and most incorrigible preteen.  The family is on the verge of bankruptcy. Father is auctioning his beloved stamps and selling the family silver. In the midst of this crisis, the irrepressible young snoop investigates the beating of a gypsy fortune-teller and the murder of a local thief, which seem somehow connected to a group of religious eccentrics, an antique shop, a missing baby, and a strange, fishy smell.