Mr. Penumbra's 24-Hour Bookstore

Mr. Penumbra's 24-Hour Bookstore


The Great Recession has shuffled Clay Jannon away from life as a San Francisco web-design drone and into the aisles of Mr. Penumbra’s 24-Hour Bookstore. But after a few days on the job, Clay discovers that the store is more curious than either its name or its gnomic owner might suggest. The bookstore’s secrets extend far beyond its walls.  (Summary and cover courtesy of


This was one of the best books that I’ve read in quite a while!  I absolutely adored it.  There were plenty of twists and turns and I never quite knew what was going on.  The group of friends is honestly too interesting and diverse to be true (at least in my world), but they kept it interesting and it was fascinating to see how they pulled together both old and new.  Mr. Penumbra was completely charming, I wanted to meet him and his bookstore in person.

I’d highly recommend this one to those who enjoy puzzles, particularly ones that seem to be straightforward.  There’s a little prequel to the book and I will certainly be giving that a read fairly soon!

Rating: 5 stars!

Who should read it? Everyone who loves a good puzzle.

Want to read the whole series? 

  • Ajax Penumbra 1969 (Mr. Penumbra’s Bookstore #0.5)