Mysteries of love, romance and truth-telling lie atthe heat of Isabel Dalhousie's concerns in Alexander McCallSmith's new Sunday Philosophy Club novel.Isabel's niece Cat is still worshipped by the youngmusician, Jamie, but Cat has a new and unsuitable love-interest.Meanwhile Isabel's Texan cousins have arrived in Edinburghand are provoking a quite separate set of dilemmas. In between theseevents and complications, Edinburgh life continues, calmly sailedthrough by Isabel, her housekeeper, Grace, and, of course, thatcautious resident of Isabel's garden, brother Fox. His aloneis the uncomplicated existence.