The Phantom Mudder (Jack Russell : Dog Detective Series)

Doggeroo has been running its famous Annual Dog Show for 150 years, and this year Jack's landlord, Sarge, is one of the stewards. Someone is nobbling the entrants, muddying their coats just before their classes. Could it be the dogs themselves, striking a blow for the right to roll? Jack thinks not... and is proved right when Lord Red is one of the victims. Jack soon sniffs out the true culprit...