Kathy Carts is an eighteen-year-old "amateur" detective with a taste for solving even the most puzzling mysteries. Her friends, Ella and Isabella, are not quite as daring. While loyal to their best friend, they are not entirely willing to snoop around in other people's business to find suspects. Kathy, however, tries as hard as she can to get straight to the point without making any mistakes. She is not always successful, but she prefers it if she is. Over and over again, Kathy and her friends are faced with some of the most dangerous cases ever seen in their town. But can Kathy gather clues and catch the bad guys before it is too late?