Volume 1 of The Lady Agnes Mystery tells the story of Lady Agnès de Souarcy, a young widow living in 14th century France with her eleven-year-old daughter Mathilde and ten-year-old Clément, a servant’s child whom she has raised as her own son. Left with only a small dowry to live on, Agnès is struggling financially and reliant on the support of her half-brother, Eudes de Larnay. Unfortunately she and Eudes have always had a difficult relationship and when Inquisitors arrive in the area to hunt down heretics, Eudes sees this as the perfect opportunity to rid himself of his troublesome sister.

Agnès may have some powerful enemies but, unknown to her, she also has some powerful friends who are prepared to do everything they can to protect her from the horrors of the Inquisition. But is there any connection with the murders that have been carried out on Agnès’s land – dead bodies which have been discovered with the letter A marked on the ground beside them – and with the poisoning of several nuns at nearby Clairets Abbey? It seems that all of these things must be linked..but how?

The Lady Agnès Mystery is a book with many layers. First, there’s the richness of the historical setting. Set in the Perche region of France in 1304, the story takes places at a time of religious conflict and of power struggles between King Philip IV the Fair, his various advisers and their rivals, and the two religious orders, the Knights Templar and the Knights Hospitaller. We meet characters who belong to each of these groups and are given a range of different views and perspectives. It’s exactly the same period of history as I’ve previously read about in Maurice Druon’s Accursed Kings series and I loved revisiting it here. If you’re not familiar with this period, though, it shouldn’t be a problem; everything you need to know to understand the story is clearly explained in the text – and if you do want to know more, there are several appendices at the back of the book which provide definitions, explanations and brief biographies of historical figures.

This is not a dry, heavy read, though. There’s always something happening – a clandestine meeting in a dark tavern, a coded message being deciphered or a hidden room being explored, not to mention the vivid scenes depicting Agnès’s ordeals at the hands of the Inquisitors. My favourite aspect of the book was the mystery surrounding the deaths of the nuns…I particularly enjoyed watching the apothecary nun Sister Annelette using her knowledge of plants and herbs to try to catch the murderer.

So far so good. However, there is another storyline involving the Knights Templar, a secret prophecy and a missing manuscript which didn’t really interest me at all. I thought there was already enough going on with Agnès’s personal story and the murder mystery…and I’m sure I’m not the only one who finds it difficult to read this sort of storyline without making comparisons with The Da Vinci Code.

Volume 1 ends, not on a cliffhanger exactly, but with some of the many plot threads still unresolved. I would like to know what happens next to Lady Agnès and her family, and I would love to see more of the nuns of Clairets Abbey.