Read for library book group.
First off, I think the title is a misnomer, albeit catchier than "murders based on a list in a blog post".
I was curious at the start, and enjoyed how bookishly meta it was (it's even set in a bookshop) and was looking forward to seeing where it was going but it became increasingly far-fetched and began to hurtle towards the finish as if even the author just wanted it done by that point.
I liked the bookshop cat! ?