Fourth-graders Drake Doyle and Nell Fossey combine their detective and scientific investigation skills to solve a variety of cases, involving a hungry cat, endangered penguins, a fish-stealing monster, and a dirty election. Includes a section of scientific experiments and activities.

Fourth-graders Drake Doyle and Nell Fossey combine their detective and scientific investigation skills to solve a variety of cases, involving a noisy garbage can, endangered frogs, a stuck truck, and a mysterious love letter. Includes a section of scientific experiments and activities.