The third book in Parris’ Giordano Bruno heretic and spy series, Sacrilege finds our philosopher hero, Bruno, at his most vulnerable yet. Still living in the French embassy it’s not until Bruno discovers the identity of the person following him through the streets of London that he’s reconnected with someone from his recent past, someone for whom he has strong feelings. When asked to help this person clear their name of a crime they didn’t commit, Bruno is unable to refuse. Seeking the permission of his employer, the spymaster Sir Francis Walsingham to go to Canterbury, he’s also tasked with uncovering any Catholic plotters in the heart of a city once famed as a site of pilgrimage and the place where Thomas Beckett’s bones were once buried.

Travelling under a non-de plume, Bruno arrives in Canterbury and discovers plots and plans aplenty. But when the body count rises and he’s accused of terrible crimes, it’s not just his friend’s name he has to clear or Sir Francis’ suspicions he has to lay to rest. Bruno finds himself fighting for his life and the only way he can save himself and his friend is to uncover a conspiracy so dark and tightly controlled that has the potential to bring down the greatest men in Canterbury – men who will stop at nothing to protect their own hides, even if it means killing innocents.

Once again, this is a terrifically written and paced novel that allows fans of the series even more insights into the central character and the strengths and, indeed, weaknesses that make him so appealing. Whereas other books have focussed a great deal on the ideologies and philosophies that shaped the era, the laws of the cosmos, the role of magic and mathematics, divine intervention and Bruno’s opinions and studies in these areas, lending the books a historical authenticity and the demonstrating the author’s research and understanding, this novel relies more on character and plot and I think is better for that. Any references to beliefs or famous treatises and how they influence Elizabethan thought is seamlessly woven into the narrative rather than sitting apart as a dinner conversation or dialogue/debate between two learned men. It’s as if Parris is more comfortable with her material now and the reader can appreciate her considerable knowledge and she can just get on with the story. And what a story it is – treachery, sacrilege, betrayal, love, death and faith all feature as does the book for which Bruno will sacrifice anything… or will he?