The Heelers provide protection for the local vet, who orders inspections of all sheep properties after an outbreak of a highly infectious disease. Johne's disease threatens to kill every sheep in Mt. Thomas, and ""Dr Death""—as the vet becomes known—is not popular. Farmers demand a scapegoat as they succumb to the inspections. Somebody must be responsible for carrying this blight to the district, and the only new sheep in town belong to Senior Constable Robyn Taylor. Robyn, with her husband Jeff, escaped the city to reap the good life in Mt. Thomas. Jeff decides a few sheep might supplement their income while they establish a vineyard. The local farmers have little respect for these dabblers and immediately suspect the Taylors are responsible for the Johne's outbreak. When one of Robyn's sheep dies, the town's worst fears are confirmed. Ben and PJ investigate and find that Jeff has forged a deed of sale and that he bought the sheep via the Internet. How could he be so gullibl