A VINTAGE MURDER MYSTERYAgatha Christie called her a shining light . Have you discovered Margery Allingham, the 'true queen' of the classic murder mystery?The tranquility of Cambridge is punctured when Cousin Andrew of the illustrious Faraday family disappears without a trace. No time is wasted in summoning Albert Campion and his sleuthing skills away from the bustle of Piccadilly to investigate ...