Part mystery, part adventure, the fast-moving story explores themes of honesty, power, family, and friendship. Memorable characters create opportunities for prequels and sequels, yet the story is satisfying on its own. The acclaimed New York Times-bestselling and award-winning author of the Mysterious Benedict Society series returns with a captivating, heart-stopping adventure about thrilling secrets and dangerous mysteries--and the courage to reveal the most frightening of truths. Illustrations.