For centuries in the Temple of Valnon, young men have paid a tremendous price to be chosen as Songbirds. Every twelve years, a new Lark and Thrush are castrated for their heavenly voices, but few men have ever been capable of claiming the title of Dove: the holy avatar of Saint Alveron himself. In the six hundred years since the Temple's founding, Willim is only the third to buy the Evensong with his blood. A virtual prisoner of the Temple for the duration of his term, Willim pays little heed to anything but his duty to sing for Valnon. That all changes with the murder of the Songbirds' loyal bodyguard and Willim's rescue by Nicholas Grayson, a sell-sword who brings whispers of Temple scandal and ancient prophecy in his wake. Plagued by ghosts and nightmares, betrayed by a fellow Temple Bird and forced into exile, Willim struggles to unravel the tangled history of his title in the hopes of understanding what it truly means to be Valnon's Dove. With his friends scattered and Valnon poised on the brink of war, Willim's only hope lies in summoning the ancient power of his saint: to Sing Down from Heaven a music that can fell an army in its tracks, or wipe a city from the surface of the earth. But the song of Saint Alveron is as unpredictable as it is powerful. Whether Willim's Song will bring salvation for his city or the destruction of everything he holds dear, only Heaven knows.