I owe an apology to the shade of Jane Austen for involving her beloved Elizabeth in the trauma of a murder investigation, especially as in the final chapter of Mansfield Park Miss Austen made her views plain: "Let other pens dwell on guilt and misery. I quit such odious subjects as soon as I can, impatient to restore everybody not greatly in fault themselves to tolerable comfort, and to have done with all the rest." No doubt she would have replied to my apology by saying that, had she wished to dwell on such odious subjects, she would have written this story herself, and done it better.