Yet another one of Dot. Supt. Bill Aveyard's unobtrusive appearances, after he is summoned to the home of Lord Bushden at his death. That leaves son and heir David, who is considered simple-minded (actually he's complex-schizo), while second son Rupert is able to the point of ruthlessness. But then Rupert is killed, David disappears to join the ""Lords and Ladies,"" and a bomb in the organ blows everything wide open while reversing previous misconceptions. Traditional/ modern of pleasing mien and accomplishment.