Murder in the grotto... March 1926: Daisy Dalrymple, at work on her book of architectural follies, heads for Appsworth Hall, famous for its fine example of a grotto. Daisy's plans are blown off course, alas, when the grotto explodes, taking with it houseguest Lord Rydal. Faced with an array of suspects, all with good reason to want the abominable, tactless and womanising Lord Rydal dead, it is sheer folly for Daisy even to attempt to find the killer...