A busy day of shopping turns into a thrilling chase for the neighborhood's best young detective! Cam Jansen and her best friend Eric are at Binky's Department Store, trying to get their back-to-school shopping done. But the crowded aisles are full of surprises. Suddenly, a frantic customer realizes that his shopping bag containing a brand-new corn popper has been snatched right out from under his nose! Who would steal a popcorn machine in the middle of a busy store? Cam knows she cannot just walk away from a crime. Putting her own shopping on hold, she says click and locks the scene into her amazing photographic memory. With Eric by her side, Cam races through the department store, dodging shoppers and hunting down clues. Can she outsmart the sneaky thief before they make a clean getaway? Jump into this fast-paced chapter book and help Cam crack the case!