Prioress Eleanor and Brother Thomas aren't sure why the Abbess has sent her brother to inspect their house, but they are determined to prove that the buildings, the people, and the faith are strong and well-tended. When a member of the visiting priest's retinue falls ill and dies, the leaders of Tyndal Priory are suspected of murder. They must tread carefully as they investigate and find proof of what really happened.

SATAN'S LULLABY is the eleventh book in Priscilla Royal's Medieval Mystery series. The main characters, of which there are many, sometimes refer to past adventures but it's not too distracting to a new reader. It did take me several chapters to really get into the flow of the story and begin to keep everyone straight.

The murder mystery at the heart of the story is a good one. It keeps the reader guessing right to the end. The resolution is unexpected, and I have to admit for me it wasn't entirely satisfying. The author drops some red herrings that aren't entirely false leads, but never really go anywhere. The characters who populate the priory and connected village are smart and likeable but the visitors are, for the most part, very simple and one-dimensional.

I recommend this book for fans of historical mysteries and for open-minded readers of Christian fiction.