Catz is determined to be a successful detective. He gathers all the equipment of his trade and sets off on his first case. But try as he might, it's not as easy as he thinks, and he makes no progress. Catz thinks he has failed, but he has also failed to notice all the good he is doing along the way! Cheered on by his friends, and with new evidence and new determination, he finally fulfills his dream. Humorous drawings convey Catz's changing emotions and provide scope for visual literacy, as the reader solves sub plots along the way.