The Twyford Code

I liked all the puzzles that led to the investigation. I mostly liked the twist, but it did make me stop and wonder how realistic that could be. But then I decided that I didn't care how realistic it was because it was a fun read. I think that is what I came away with. It is a fun mystery with several puzzles. There are a couple clues along the way that lets you know there is more going on than the surface level of the story.