'I applied my super-sniffer to the job. The strange dog scent was stronger. That meant the strange dog was in the dog den. Had the dog-nappers struck already? Were they planning a wave of dognappings all over Doggeroo? When Jack and Sarge move to the town of Doggeroo, Jack soon notices that things are going missing. He doesn't mind when an old boot from the yard disappears, but when his squeaker bone, dinner, dinner bowl and blanket vanish, Jack knows that something sinister is afoot. Jack Russell is a dog-detective with a nose for whodunit and, though he is often hampered by the well-meaning but bumbling 'Red', he always manages to sniff out his quarry in the end.