Voyage of the Mourning Dawn

A young thief races to recover a powerful, long-lost super-weapon in this first Heirs of Ash novel set in the magical world of Eberron
 
For years, rumors have spoken of the Legacy, a device beyond imagination and the brain child of the brilliant Ashrem d’Cannith. Some say it was a weapon; others claim it was a portal to other worlds. But in Cyre, on the Day of Mourning, Ashrem and his Legacy vanished in the greatest cataclysm the world had ever seen.
 
Now, a struggling young thief named Seren stumbles upon a clue that may lead to the lost Legacy. But what begins as a routine burglary has the authorities out to arrest her, ruthless spies out to kill her—and one of the heirs of Ashrem trying to save her. To stay alive, Seren and her new crewmates on The Mourning Dawn must find Ashrem’s Legacy before it falls into the hands of her pursuers. For if they fail, Eberron will plunge into another century of war.