Luck is its own kind of magic, in this first book in an electrifying new contemporary fantasy series from the author of the #1 New York Times bestselling Hollows novels. Petra Grady has known since adolescence that she has no talent for magic--and that's never going to change. But as a sweeper first-class, she's parlayed her rare ability to handle dross--the damaging, magical waste generated by her more talented kin's spellwork--into...