Hannah's dog Molly wins first place in the neighborhood dog show, but her family doesn't get to celebrate for very long. Soon after they return home, Molly goes missing Hannah's parents are convinced that she left the back gate open by mistake, but Hannah knows she didn't. Her Club CSI: friends help investigate and find a crushed orange dog treat (Molly's treats are brown) and a piece of ripped red fabric that snagged on the back gate. Was Molly the victim of a dog-napping? If so, who took her and why? Club CSI: is on the case