The Alden children are visiting a gem mine that is holding its annual gem-hunting competition. With a little instruction and the right gear, the Aldens have everything they need to begin their search. It's not long before Jessie makes a fabulous find. But just when she’s about to win the contest for finding the biggest ruby, her gem disappears! Now instead of digging for rocks, the Aldens are digging for clues. Who wants to win the contest so much that they would steal from the Boxcar Children?
About the Author
Gertrude Chandler Warner grew up in Putnam, Connecticut. She wrote The Boxcar Children because she had always dreamed about what it would be like to live in a caboose or a freight car—just as the Aldens do. When readers asked for more adventures, Warner wrote more books—a total of nineteen in all. After her death, other authors have continued to write stories about Henry, Jessie, Violet, and Benny Alden, and today The Boxcar Children® series has more than one hundred books.