Another hidden gem from Smith, his first series, two books long. The protagonist lives on the edge of Roman culture in New York City and consults with/assists the police with special problems. Here, the sacred Hungarian crown of St. Stephen is to be displayed in a church before it is returned to the Communist regime in Hungary. Communists, anti-communists, and thieving gypsies all are vying to steal, protect, or destroy it, and Roman, our protagonist, has to sort them out.
A good mystery with fascinating characters and culture and oh-so-well written, which is the biggest thing.