Eye of the CNeedle

I had already read it, but when you start reading, you realize there were things you didn't remember, and you can't stop reading. It's so thrilling.

World War Two in Britain. The Needle is a German spy. But to protect his "job", he has to commit murders, and he's extremely gifted for it!

The MI5 follow him, because he holds photographs of this extraordinary false military camp in North Anglia, which the Germans think is real. To save the proofs, he escapes to Scotland, to Storm island, in front of Aberdeen, where a young woman ......

And the face of the war could have been different!