Caitlyn Sinclair hides her magical need for souls behind her job as an assassin in the Miscreants Guild—the home of spies, thieves and assassins. She is a SoulEater, a mage who uses the aural energy of other people to fuel her spells. She has no choice but to take those lives, because without the infusion of life-force she will die. She's made a home for herself in the city of Ellemarlene, until the day she executes her Guild Master and is cast out. Her only chance at survival is to join the Mage Guild and embrace her magical nature. To become a terrible weapon, someone with the power to wipeout entire towns.