Chronicle of the Unhewn Throne

In The Emperor's Blades by Brian Staveley, the emperor of Annur is dead, slain by enemies unknown. His daughter and two sons, scattered across the world, do what they must to stay alive and unmask the assassins. But each of them also has a life-path on which their father set them, destinies entangled with both ancient enemies and inscrutable gods.

Having learned the identity of her father's assassin, Adare flees the Dawn Palace in search of allies to challenge the coup against her family. Few trust her, but when she is believed to be touched by Intarra, patron goddess of the empire, the people rally to help her retake the capital city. As armies prepare to clash, the threat of invasion from barbarian hordes compels the rival forces to unite against their common enemy.

The ancient csestriim are back to finish their purge of humanity; armies march against the capital; leaches, solitary beings who draw power from the natural world to fuel their extraordinary abilities, maneuver on all sides to affect the outcome of the war; and capricious gods walk the earth in human guise with agendas of their own.

Pyrre Lakatur is not, to her mind, an assassin, not a murderer - she is a priestess. At least, she will be once she passes her final trial. The problem isn't the killing. The problem, rather, is love. For to complete her trial, Pyrre has ten days to kill the seven people enumerated in an ancient song, including "the one who made your mind and body sing with love / who will not come again." Pyrre isn't sure she's ever been in love.