There once was a dog with a keen sense of smell. She was known far and wide as Detective Dog Nell. Peter's dog Nell has an amazing sense of smell. Whether it's finding a lost shoe or discovering who did a poo on the new gravel path, her ever-sniffing nose is always hard at work. But Nell has other talents too. Every Monday she goes to school with Peter and listens to children read. So who better to have on hand when they arrive one morning to discover...