"Isda does not exist. At least not beyond the opulent walls of the opera house. Cast into a well at birth for being one of the magical few who can manipulate memories when people sing, she was saved by Cyril, the opera house’s owner. Since that day, he has given her sanctuary from the murderous world outside. All he asks in return is that she use her power to keep ticket sales high—and that she stay out of sight. For if anyone discovers she survived,...