Download or read book The Great Spy Showdown written by Gertrude Chandler Warner and published by Random House Books for Young Readers. This book was released on 2019-09-01 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Boxcar Children are putting their sleuthing skills to the test in a spy competition. Can you help them take the top prize? In this interactive, choose-your-path mystery, readers will help the Aldens make decisions that will either lead them to victory or blow their cover.