Kit is the best-selling American Girl doll with a built in consumer base with over 1 million books and videos sold! Kit  Kittredge is a 1930s girl with a nose for news! She is a clever, resourceful girl  facing the Great Depression with spirit and determination. Kit is ready for an  adventure. To make ends meet, the Kittredge household has had to take in  guests—and it seems as though every one of them has a mystery for Kit to  solve and write about.