Mr. Penumbra's 24-Hour Bookstore

"Mr. Penumbra's 24-Hour Bookstore", by Robin Sloan, 2012, 304 pages, 95k words.

I want to call this book "slipstream"? It is not science fiction, nor fantasy? But it does feature a fantastical, mystical society? I'm creating a new category, "library fiction".

It is a charming book. It is a mystery novel, but that term seems reserved for murder mystery, which this is not.

It revolves about books, bookstores, & libraries, how could I not love it? Plus an interesting ending.

Bonus, there was an addendum written the following year, which was included in my eBook: "Ajax Penumbra 1969", 2013, 96 pages, 16k words.

This is the secret origin story of Mr. Penumbra, and, again, is about books & bookstores with some interesting San Francisco history thrown in. Nice!