Mira Vale is a coastal mapmaker who takes a night job at The Midnight Book Shop in Pellworth.

On her first shift she finds a harbor in a centuries-old atlas that does not match the real coast. At midnight a stranger, rare-book dealer Adrian Saye, is found dead between the stacks. The atlas is gone from the desk.

The after-dark book club was still in the building. Mira follows coded journals, a hidden passage, and the town's old survey maps to find out which version of Pellworth's history was worth killing for.

A cozy mystery about a night shop, an impossible harbor, and a town that shelved the truth.