Ruth Fielding at the War Front

Ruth continues her work for the Red Cross and is soon transferred to a hospital that is on the war front. Ruth faces the very real danger of possible death but soon has a greater concern. Ruth asks a friend whether there is any news of Tom Cameron and learns that he has disappeared in Germany—and is suspected of working for the Germans! Ruth is shaken but certain that Tom would never betray his country… (Excerpt from Goodreads)