I Am Pilgrim is a thriller that is intelligently written. It centers around a Saudi man who becomes radicalized when his father is beheaded for making negative remarks against the government. He learns to synthesize smallpox and figures out a way to start an epidemic in the US. The US will be destroyed, and, without US support, the Saudi government will be destroyed as well. Both he and his plan are brilliant. The other end of the story is about an intelligence (deep intelligence) agent whose job is to stop him. All roads lead to Bodrum in Turkey, where most of the action takes place.
As with any thriller, there are lots of other threads weaving in and out of the main plot. Some of them are fascinating. I have only a couple hesitations about the book. One is that the climax didn't fit with who I believed the Saudi to be. The other is that Turkey is represented in a negative way. My experiences in Turkey have been overwhelmingly positive. It was tough for me to appreciate the subtle and not-so-subtle negative ways Turkey was described.
Other than that, I Am Pilgrim is worth reading.