First, they saved us. Then they enslaved us. Yet five hundred years after the angels vanished, humanity continues to obey. Professor Rachel Jordan dared to defy 3000 years of angelic doctrine, teaching that the ancient angels were never the saviors they claimed to be. The Redeemers, self-appointed guardians of angelic law, branded her a heretic. Hunted by zealots who would brainwash her back into the angels' good graces, she flees to the edge of civilized space. But not to hide. Rachel's only hope is a fabled lost book of the Codex, written by a rogue angel: the Sefer Raziel. Tracking the book to a desolate former prison world, she delves into the criminal underworld to ferret out its location. But her search draws the ire of greedy megacorporations, shadowy puppet governments, and the zealots who chased her there in the first place. As conflicting forces close in, Rachel must rely on dangerous allies and question the limits of her moral code to be the first to claim the Sefer Raziel. Even if it kills her. Because the only fate worse than death is knowing that her failure doomed humanity to eternal servitude. Echoes of Angels is the first book of Sins of Angels, an epic space opera series set 3000 years after the fall of Earth. With the scope of Dune and the adventurous spirit of Indiana Jones, Sins of Angels delivers a conflict that spans galaxies and rests on the spirit of a single brave researcher. Follow the complete saga, and watch as the fate of our species hangs in the balance.