1860, Wimborne, Dorset. Rebecca Tullidge, miserably married to her callous husband, finds some escape through a love affair with another man. After putting her drunk husband to bed one Saturday night, she sneaks from their lodge to meet railway officer, John Bedloe. But much to her horror, she trips over her lover's corpse on the railway tracks. The railway director calls Inspector Colbeck and Sergeant Leeming in from London to solve the hideous...