In 1955, Home Office pathologist Doctor Richard Pryor is pleased when forensic biologist Angela Bray is able to return earlier than expected to their new and thriving private forensic consultancy, following the quick recovery of her mother from a stroke. Together, they are able to persuade locum doctor Priscilla Chambers to stay on a few weeks longer, and Priscilla's flair for anthropology comes in handy when a new case shakes up the quiet resort town of Borth--a body, found in the bog, with its hands tied and the head missing.