Code to Zero

Code to Zero is a wonderful book by Ken follet. Certainly a nice read. With lot of action, suspense, betrayal and all. This is a combination of everything. Though the story is based around the CIA spy work and the story time is during the early days of cold war, it has almost all the necessities to grab a reader's attention.
And till the end, we will feel the thrill of a real spy story. Though it's a fiction work, there are striking resemblances with the real world.