There have been ten earlier books in this series although this is the first one that I have read. It pairs two investigators, who as is often the case in fiction, are somewhat mismatched. The case that they are involved in has elements of the build up to poor relationships with Germany prior to WWI and an important religious document that must be located. The detectives are involved with important British political figures including the PM as they race to restore order.
This title is a solid addition to a series. I think that I need to go back and meet these detectives earlier in their careers.
Many thanks to NetGalley and the publisher for this title in exchange for an honest review.