Every religion has a story for how our species came to mix with yours and was doomed to this planet. We are the sons of exiles. Cursed. Even man condemned us, blaming us for all the evils of the world. On the one hand you worshiped us, these beings who brought knowledge from the heavens. But you also feared us for what we might want in return. . . .”

In approximately seventy-two hours, a little-known Middle Eastern terrorist group plans to bring about the end of the world. Convinced that they are the descendants of angels, they believe they are on the verge of at last being returned to heaven. Central to their plan is the kidnapping of Martin Faber, an undercover American scientist whose research has led him to an extraordinary secret.

Martin’s only hope for survival is his young wife, Julia Alvarez—a woman born with a rare psychic gift. But she must find the courage to save her husband, all while running from religious extremists and clandestine government agencies.

Sierra takes readers on an adventure across the world, from the summit of Mount Ararat to the high desert of New Mexico, from the monuments of Washington, DC, to the medieval city of Santiago de Compostela in Spain. Sierra spent years investigating scientific and historical mysteries related to mankind’s efforts to engage directly with the Almighty.

The Lost Angel bears all the hallmarks of Sierra’s erudite yet fast-paced brand of storytelling, combining historical fact and fiction with dazzling narrative feats.