Cam and her friend Eric chase the thief of Aunt Katie's wallet through an amusement park and find themselves involved in another case requiring their special detective skills.
Cam Jansen sets out to solve the mystery of Danny's parents' missing car before the famous mystery writer Jim E. Winter, who is signing books at the school, does.
On Green Day, Cam and her classmates discuss ways to protect the environment, but when money collected for the school's new skylights disappears, Cam uses her photographic memory to solve the mystery.