Death of a cosy writer

Bestselling mystery writer Sir Adrian Beauclerk-Fisk delights in tormenting his four grown children with threats of disinheritance. Then he announces his latest blow - he's engaged to Violet, a beautiful widow with a dubious past. Money-driven panic soon sets in among the backstabbing brood when eldest son and appointed heir, Ruthven, turns up dead in the wine cellar. Can Detective Chief Inspector St. Just nab the killer before another heir lands in the family burial plot?