About this book:

When cartographer Mira Thorne inherits her grandfather’s sealed chest, she expects old maps—not a missing historian, a silver feather, and a secret society that has waited eighty years for the Thorne name to lead them to a forbidden relic. Hidden in the margins of ancient charts are ciphers, false shadows, and clues to a wartime mission known only as Operation Eclipse.

From Zurich’s rain-slick streets to Alpine monasteries, hidden vaults, and Sicily’s starlit observatory, Mira must decode her grandfather’s final secret before the enemy turns every map into a trap. With betrayal buried in her family’s past and an artifact capable of unleashing unimaginable darkness, The Cartographer’s Final Secret is a gripping thriller for anyone who loves coded maps, lost relics, and history’s most dangerous lies.