A perfectly preserved body is recovered from a peat bog on the Isle of Lewis. The male Caucasian corpse - marked by several horrific stab wounds - is initially believed by its finders to be over two-thousand years old. Until they spot the Elvis tattoo on his right arm. The body, it transpires, is not evidence of an ancient ritual killing, but of a murder committed during the latter half of the twentieth century. Meanwhile, Fin Macleod has returned to the island of his birth. Having left his wife, his life in Edinburgh and his career in the police force, the former Detective Inspector is intent on repairing past relationships and restoring his parents' derelict croft. But when DNA tests flag a familial match between the bog body and the father of Fin's childhood sweetheart, Marsaili Macdonald, Fin finds his homecoming more turbulent than expected. Tormod Macdonald, now an elderly man in the grip of dementia, had always claimed to be an only child without close family. A lie, Fin will soon discover, Tormod has had very good reason to hide behind.