ISBN-13: 9780751545975 / Angielski / Miękka / 2011 / 394 str.
It is 1802, and when her beloved father dies, Lucy Mitchell's curiosity is fired by his last words, "the de Northbys owe you." Who are the de Northbys and why do they "owe" the Mitchells? Her mother says he was too sick and confused to make sense but Lucy undertakes some investigations of her own.