Shetland (season 6)

During an archaeological excavation on a Shetland island, human remains are found, but before it can be determined whether they are modern or ancient, an elderly local woman, on whose property the archaeological work was carried out, is murdered. Local policeman Jimmy Perez, who returned to the islands with his stepdaughter after his wife's death, is taken in to investigate. The investigation goes back to the past, to the time of World War II.