In Co Down, dairy farmer Derek Geddis turns to a volunteer search and rescue team after three of his cattle go missing. When the animals are found stranded in a river, the farmer's skills and the team's technology are put to the test in a delicate recovery mission. In Co Durham, a community support officer's drone footage helps catch deer poachers in the act. His quick response and aerial evidence lead to a rare conviction. Plus, in north Wales, reporter Paul Colgan investigates how police and scientists are using dog DNA to trace the animals behind devastating livestock attacks