It’s the mid 1980s and farm vet Colin Whitaker has the ominous realisation that a new disease is emerging in Kent’s cow herds. The Ministry of Agriculture, Fisheries and Food knows about it - and is determined to keep a lid on this potentially devastating news. But by 1987 officials know they have to act.

Government epidemiologist John Wilesmith is given a secret mission to find out how to stop the spread of what’s become known as BSE. He dons his wellies and works out one of the few things anyone can say for certain about the cause of the epidemic.

Written, presented and produced by Lucy Proctor.