When sixteen skeletons are unearthed near an old prisoner-of-war camp outside the northern city of Hafton, it seems like a straightforward case for Detective Chief Inspector John Blizzard. With all indicators pointing to natural deaths from influenza during the First World War, there seems little to concern modern-day detectives. But Blizzard's instincts tell him something is wrong. As he investigates the case alongside his colleague, Sergeant David Colley, they find themselves revealing dark secrets concealed for more than fifty years. And for John Blizzard it'll mean confronting demons from his own past.