I love Steffen Jacobsen's books (I've also read the whole Michael Sander and Lene Jensen series). As always, his thrillers are based on historical fact, in this case about Los Alamos in 1945 and the development of the atomic bomb. The characters he uses are mostly people who actually worked on the development of the bomb. Oppenheimer also plays a major role in this book.
David Adler is a Danish electrical engineer who worked for years in Murmansk. In January 1945, he is recruited by Russia as a spy to take part in the Manhattan Project. As a relative of Niels Bohr, he quickly gains the great scientist's trust and becomes his personal assistant. As a result, he is constantly around Oppenheimer and the other researchers.
David watches the development of the atomic bomb with horror. He also realises that other Russian spies are involved. Who can he trust and who must he eliminate?
It is excitingly written. ( )