Definitely a pop science book, with the start of each section having a (at least partially fantasised) dramatic section. In fact, while it is a pop science book, there is a lot of history in there (which is probably quite expected given the subject matter).
It is organised into, electricity, nuclear reactions etc., and starts of with the section containing the title story, electricity. However, I felt that this was too large a section, and toward the end of it, I had become quite bored of hearing more and more about the mad things some people did with electricity before much was known about it.
By far the most interesting section was the middle one, on deception in psychology (and psychiatry), and I'd been aware of some of the bits in there before!
Overall, I think it was well-written, interesting to read and easy to follow, I just wish there had been a bit more variation in topic.