It's the 1930s, and times are tough for a lot of families. Kit Kittredge's family has started taking in boarders to make ends meet. At first it's a little weird having strangers living in the house. Pretty soon, though, Kit's getting to know each of them, and it seems as though every boarder in the household has brought a mystery along with his or her suitcase or steamer trunk. Now Kit's on the case, using her nose for news to track down every lead. Can you help Kit solve six challenging cases?