This is the seventh book from Daniel Silva, and his fourth dealing with the escapades of part-time art-restorer part-time Israeli spy/assassin Gabriel Allon. As always, Silva does not dissapoint. A colleague of Allon's is killed in his office in Vienna, an office that specialises in investigating aspects of the holocaust. Allon's handler, Ari Shamron, directs Allon to investigate, and so the story starts. A story that takes us to Austria, Italy, the Argentinian highlands, the United States, and of course to Israel. The story also touches on two themes that Allon has visitied before: the holocaust, and the relations between the Vatican and the Third Reich. The story is a thriller in every sense, and I thoroughly enjoyed it, as I have all of Silva's books. Silva usually takes his readers on an enchanting journey through many interesting countries and cities, and he is a master at accurate descriptions of these places. His descriptions in other novels of Rome, Venice and Jerusalem, amongst other places, were simply outsanding, and highly accurate. At least, in my experience of these places. But he and I clearly had very different experiences of Vienna. I was surprised by his "missing the mark" with Austria in general and Vienna in particular. It is a wonderful country and a wonderful city: gay, lively, tolerant. It is hardly this dark and foreboding hotbed of antisemitism and fascism like he has chosen to portray it. I suspect that Silva did spend some time Vienna, and it is not too accurately portrayed, when compared with my own experiences. And, while I do concede that Austrian coffee terminology can be a little tricky for a non-German speaker, I suspect that few Viennese order a cup of whipped cream in a cafe. However, that is not to say that this book is a most enjoyable read, and I have no hesitation in recommending it. If this is your first "Gabriel Allon" novel, I would recommend to read the previous three first, to put it in perspective. Vienna has a special place in Allon's history, and I think it is important to understand that when reading this book. From me: three and a half stars!