Tom Abbott is becoming too old to run his farm, and his neighbour, Ronald Pitts, is determind to drive Tom out and take over. But Abbott remains adamant that he is coping. Kate discovers one of her patients has caught brucellosis, caused by the milk of Abbott's farm. As Nick investigates, he discovers Abbott is a distant relative to Dr Radcliffe, who manages to save Abbott's farm. however, Pitts begins vandalising the farm, and when Abbott is rushed to hospital with a serious illness, Nick discovers a saboteur lies much closer to home. Meanwhile, Greengrass and Gina attempt to track down the long-lost brother of a rich Australian who is staying at the Aidensfield Arms because he is offering a reward, which means performing a break-in - at a church.