In the final part of Burnfield, David Crombie, the only survivor of the 1975 Hill Murders, at long last begins to confront the mysteries of his past, a mystery that spans centuries, from the strange construction of an Iron Age fort on Burnfield Hill to a medieval tale of murder and revenge. And will the diary of a Great War officer, recounting the mud and carnage of the Somme, finally reveal the reason for the deaths of his friends 25 years earlier…?