This was really excellent. The mystery is riveting, and Tey maintains the tension throughout, while allowing things to unfold in a leisurely fashion. If I have one minor complaint, it's that it does move a little bit slowly. But that is just a tiny thing.
What a loss it was that she died so young. I've now read 3 of the 8 books that the author wrote as Josephine Tey (she also wrote as Gordon Daviot), and 2 of her Inspector Grant mysteries. I will keep buying her books as I find them.
There's more to say about this book, and perhaps I do a longer review later, but for now, I'm just basking in the gloriousness of this book.