Murder on Threadneedle Street by Andrea Penrose

As always, the book opens with a murder. This time, the victim is someone we've met in previous books which explains why Wrexham, Charlotte, and all of their friends and wards get involved with this crime. 

The stories in this series always have a historical pinpoint and the subject under discussion in this book is banknotes. I honestly hadn't thought about it very much but it makes sense that, at some point in our history, we had to figure out a way to try and thwart counterfitting. It made for some very interesting inventions and plot points. 

Another things that Penrose does so well is to allow character growth, however slight, for her characters. The addition of Eddy, Wrex's sister to the house has caused some ripples but, shockingly, all of the characters talk to each other about friction points and manage to smooth it out rather than it causing misunderstandings and friction that become the basis of the book. Instead, the mystery is central. 

Four stars

Wrexford & Sloane #10

This book came out September 29, 2026

Follows Murder at Somerset House

ARC kindly provided by Kensington Publishing and NetGalley

Opinions are my own