THE FIRST CAMPION MYSTERY'Margery Allingham stands out like a shining light'Agatha ChristieA suspicious death and a haunted family heirloom were not advertised when Dr George Abbershaw and a groupof London's brightest young things accepted an invitation to the mansion of Black Dudley. Skulduggery is most certainly afoot, and the party-goers soon realise that they're trapped in the secluded house. ...