Mysteries of love, romance and truth-telling lie at the heat of Isabel Dalhousie's concerns in Alexander McCall Smith's new Sunday Philosophy Club novel. Isabel's niece Cat is still worshipped by the young musician, Jamie, but Cat has a new and unsuitable love-interest. Meanwhile Isabel's Texan cousins have arrived in Edinburgh and are provoking a quite separate set of dilemmas. In between these events and complications, Edinburgh life continues, calmly sailed through by Isabel, her housekeeper, Grace, and, of course, that cautious resident of Isabel's garden, brother Fox. His alone is the uncomplicated existence.