A VINTAGE MURDER MYSTERYAgatha Christie called her a shining light . Have you discovered Margery Allingham, the 'true queen' of the classic murder mystery?Private detective Albert Campion's glorious summer in Pontisbright is blighted by death. Amidst the preparations for Minnie and Tonker Cassand's fabulous summer party a murder is discovered and it falls to Campion to unravel the intricate web o...