Time itself has been ruptured and the only cure is to erase Emma Breugadaire's unborn child—a life that should no longer exist.

To protect her baby, Emma must trek across a Europe torn apart by Napoleon’s war and secure its place in the Lunar Workshop’s lineage. While her enemies grow in number and strength, she is forced to reckon with the reality that her child’s father, Nicholas Locherbie, is missing from her world.

Plagued by doubts created by memories of lives she does not remember living, Emma must confront the darkest parts of herself in order to reunite with the family she never knew she wanted.