"In Other Words," a publication of the Wycliffe Bible Translators, once told a story about Sadie Sieker, who served for many years as a house-parent for missionaries' children in the Philippines. Sadie loved books. Though she gladly loaned out some, others she treasured in a footlocker under her bed. Once, in the quiet of the night, Sadie heard a faint gnawing sound. After searching all around her...