Greeley's breezy 17th Blackie Ryan novel (after 2007's The Bishop at the Lake
) takes Ryan to the south of Spain for a conference, where the local cardinal requests his help preventing the murder of a beautiful and wealthy widow, Doña Teresa Maria, duchess of Seville, whose many relatives envy her money, title and power in the community. Blackie's sister, meanwhile, has put pressure on Blackie to nudge his nephew Joseph and Joseph's girlfriend, Peggy Anne Nolan, who have accompanied him on the trip, into setting a date for their wedding. To add to his concerns, Blackie receives word from the U.S. of the ill health of his superior, the archbishop of Chicago. Armchair travelers will relish the descriptions of Seville and Cordoba, along with the details of Spanish history and customs. Indeed, some readers may feel the travelogue aspects overshadow the mystery untangling, but all will enjoy Greeley's wit and good humor. (Nov.)