The world knows her as an actress and courtesan, the mistress of one of Napoleon's glittering inner circle, but Elza (aka Ida St Elme) is more than that. Only a few besides her beloved Michel know she is a secret agent in Napoleon's service, a confidential spy who works directly for the Emperor himself. Even fewer know that she is also a Companion, an old soul who has lived many lives and whose flashes of clairvoyance have occasionally given her the edge she needed to unravel an unfathomable mystery.Now Elza faces her greatest challenge yet, but her past threatens to hinder rather than help. What ancient failure weighs heavy on her soul, and how does it complicate her current task for Napoleon? Will ignorance and fear lead them all to repeat past mistakes? Or can Elza overcome the shadow of the past to complete her mission - with no less than the government of France hanging in the balance?From the ballrooms of Warsaw to the streets of Rome, from blood-soaked snowy battlefields to the buried ruins of Pompeii, from palaces to prisons, Elza must face her past to claim her future.