内容简介：Super Edition—and Jack and Annie’s most dangerous mission ever in the scariest time the world has ever known—World War II. With a longer story and additional facts and photographs, this is a thrilling adventure no reader will want to miss! When the magic tree house takes Jack and Annie back to World War II, Europe is in trouble! It is June 1944 and the brother-and-sister team must go behind enemy lines and crack a code that could save a lot of lives.