The Marvelwood magicians

"Eleven-year-old Mattie Marvelwood comes from a family of traveling performers who have a deep secret. The acts they perform are not just acts -- their powers are real. In all their wanderings, the Marvelwoods have never met performers with gifts like theirs -- until they join Master Morogh's Circus of Wonders! But it seems that Master Morogh's true talent is stealing the gifts of others. When he steals Mattie's brother's vanishing ability, the family must decide whether to run, leaving Bell's gift behind to save the rest of them, or risk exposure by trying to beat the duplicitous ringmaster at his own game?"--.