The vampire subculture of 19th-century Europe serves as a vehicle for ruminations on love and honor in Hambly's follow-up to Those Who Hunt the Night. The time is 1908, and biologist Lydia Asher is hot on the trail of her husband, James, a former spy and Oxford don who in turn is shadowing Charles Farren, the vampire Earl of Ernchester, and Farren's mortal traveling companion, the nefarious mercenary Ignace Karolyi. Lydia's pursuit of James parallels a similar trek made by Farren's wife, Anthea, who travels in James's company and is as passionately concerned about Farren's welfare as Lydia is about James's. International adventures take these characters from London to Vienna and ultimately to Constantinople, where they become enmeshed in the byzantine political power struggle that has lured Farren there against his will. Although Hambly invests these vampire and mortal personages with the traditional values being threatened by an evolving modern Europe...