The Murder at the Vicarage by Agatha Christie centers on the murder of Colonel Protheroe, the most hated man in the English village of St. Mary Mead. When the village vicar finds the Colonel dead in his study, the local residents become suspects, and the case draws in the elderly and sharp-witted Miss Jane Marple, who uses her keen observation and knowledge of human nature to unravel the complex web of motives and evidence and identify the true killer.