The Corroded Man (Dishonored #1) - Mass Paperback Edition by Adam Christopher

Empress Emily Kaldwin leads a dual life, fulfilling her duties as empress while training with her father, Corvo Attano, mastering the arts of stealth, combat, and assassination.

A strange, shrouded figure appears in Dunwall, seeming to possess powers once wielded by the assassin known as Daud. Faced with the possibility that their deadliest foe has returned, Emily and Corvo plunge headlong into a life-and-death race against time. If they fail to learn the truth about this mysterious enemy, the result would be destruction on an unimaginable scale.