Waiting in line for concert tickets is usually pretty boring, but not when you are standing next to a super-sleuth! Cam Jansen, her best friend Eric, and her Aunt Molly are just trying to buy tickets for an upcoming show when things take a spooky turn. Suddenly, a person dressed in a creepy ghost costume appears and starts scaring the people in line. The ghost startles an older man so badly that he falls down, causing a huge distraction. In the middle of all the chaos, the woman working inside the ticket booth is robbed! The police are baffled, but Cam knows this is no ordinary haunting. She has a photographic memory, and with a quick Click! she can remember every single detail of the crowded scene. Now, Cam must figure out the connection between the scary ghost and the stolen money. Join Cam and Eric as they piece together the clues and catch a very clever thief in this thrilling chapter book mystery.