My husband and I are going to Germany and I’ve been looking at lists of German books. I saw this story on which the Parent Trap movie was based on the list and picked it up. The book is the story of Lisa and Lottie, who discover at camp that they are twins and then switch places when camp ends, one going to Munich and the other to Vienna, so they can meet the other parent and so they can attempt to bring their parents back together. And it works ! It’s a very sweet middle grade novel.