They're in business together. Serious business. No case is too difficult for Doyle and Fossey, the best science detectives in the fifth grade. Is a monster lurk

Is there a creepy creature lurking in Mossy Lake? Is an evil plot stirring? Is something shocking happening to Caitlin’s cat Zappy—and can he be de-zapped?

Fourth-graders Drake Doyle and Nell Fossey combine their detective and scientific investigation skills to solve a variety of cases involving a hungry cat, endan

Science super-sleuths Drake Doyle and Nell Fossey are back—this time in a never-before-published addition to the popular series! They’ve got an exciting col

Originally published: Dutton Children's Books, 2003.