Postcard killers

Jacob Kanon is a New York detective visiting some of Europe's most beautiful and historic cities, but his response is very different to that of the average tourist. Everything Jacob sees is refracted through a dark search; he is looking through the eyes of the murderer of his daughter, Kimmy, who was killed with her fiancé in Rome. Jacob is aware that other murders have followed this, all involving young couples in such cities as Salzburg, Athens, Madrid and Paris. The one element that connects the various killings is a postcard sent to a local newspaper ...