As Phoebe spends the days reading and riding her bike, trying to avoid the tension at home -- and also trying to catch the occasional glimpse of Colin, her new crush -- she stumbles upon a mystery of her own. A sweet older woman in her neighborhood, Mrs. Tomblin, is robbed and hurt but is too confused to remember any details. Like her favorite hero of fiction, Phoebe will have to use her mind and her wits to solve the mystery of the robbery. Could Mrs. Tomblin's collection of old photographs be the motive?