Margery Allingham 
Look To The Lady [EPUB ebook] 

A VINTAGE MURDER MYSTERY Finding himself the victim of a botched kidnapping attempt, Val Gyrth suspects that he might be in a spot of trouble. Unexpected news to him but not to the mysterious Mr Campion, who reveals that the ancient Chalice entrusted to Val s family is being targeted by a ruthless ring of thieves. Fleeing London for the supposed safety of Suffolk, Val and Campion come face to face with events of a perilous and puzzling nature Campion might be accustomed to outwitting criminal minds, but can he foil supernatural forces?