When three young farmworkers die suddenly of a brain disease, the Medical Research Council feels compelled to investigate. Dr Ian Bannerman, consultant pathologist and expert on brain disease, is sent to make discreet enquiries. But in north-east Scotland, Bannerman finds plenty of cause for alarm - and terror.He discovers a brainless corpse in an Edinburgh morgue; a dead man at the foot of a Hebridean cliff; suspicious local farmers; threats from...