In 2020, pathologist Caroline Muirhead's fiancé, Scottish farmer Alexander 'Sandy' McKellar, confessed to her that he and his twin brother Robert had killed cyclist Tony Parsons in a 2017 hit-and-run on the A82 near Bridge of Orchy and buried the body on the Auch Estate.

Cast: Caroline Muirhead, Sandy McKellar, Stephen Muirhead, Margaret Muirhead, Ninon Noiret, James Crouch