Detective Dog Nell has one of the finest noses around—she uses it to find lost toys, shoes… even detect someone who’s done a poo on the new gravel path! Every Monday, she accompanies Peter to school and listens to children read. But one morning, the class discovers all the school books have vanished. Who would do such a thing? Luckily, Detective Dog Nell is on the case—ready to sniff out the culprit and bring the books back!