In the Cam Jansen mysteries, Cam Jansen and the Haunted House, Aunt Katie and Uncle George, Eric and Cam Jansen go to a amusement park. After a while they found that Aunt Katie’s wallet was stolen. The first suspects were two boys in roller skates that crashed into Aunt Katie. They tried to catch the two boys in roller skates they told the police but he couldn’t catch them. Then Cam found a guy in a black shirt with some bags in his hand …Cam Jansen Mystery images