A love letter to libraries. A puzzle for the ages. A fight for the future.

A stolen book. A cryptic note. Retired reporter Marvin MickleThwait knows something's wrong—and librarian Gloria Thanh is his only hope.

Their search plunges them into the library's forgotten underground stacks, where they discover a code hidden in the call numbers. Each clue pulls them deeper into a conspiracy that threatens not just the library, but their lives.

Someone wants this library closed. Permanently. And Marvin and Gloria are in the way.

The stakes are higher than they imagined: if the library falls, every public institution follows. Two unlikely detectives. One impossible puzzle. And a race against time to crack the code before the final chapter is written in blood.

Perfect for book-loving fans of intricate mysteries and clever code-cracking.