The Untitled Books by C.J. Archer

Apparently, books that have never been published might be called "untitled." We're told that a few times in this book. We are also reminded, a lot, that the Glass Library has books about magic, not magic books. It's a small thing but this book isn't that long, was the author afraid that we were going to forget?
It's that point that becomes important when Lady Stanhope comes to the library wanting to know if the books she's just acquired are magical books. She is obsessed with magic and paid quite a bit of money for the set. Of course, neither Sylvia nor the professor are sure though both are intrigued by the books which seem to have been written by an author who was popular many years before for a treacly sweet children's book.
Normally, Sylvia wouldn't care but Gabe and Alex have been pulled into the murder of a bookbinder, the same bookbinder Lady Stanhope bought the books from. Could it be that the books are what the killer was looking for?

Three stars

This book came out September 5, 2023

The Glass Library #3

Follows The Medici Manuscript

Followed by The Dead Letter Delivery

Borrowed as audiobook from Hoopla

Opinions are my own