Scythe was a shock to the system. It was so surprisingly fresh, original, and well written that I told everyone I knew to read it and was over joyed to know the second book was already out and waiting for me. Thunderhead was fine but not near as straight no and coherent as Scythe. Though things happen in the book, the plot is much more diluted and the pace relatively slow. Rowan, though he starts strong, is essentially irrelevant to the story. As for Citra, we get to see how she evolves as a Scythe but the central plot revolving around her and Marie curie also rather dribbles out to nothing. The last few chapters of the book are stronger, much closer to the first. Interesting bin this story is we get to see the thunderhead evolve as a character. I am not sure the author made the right call I doing this. I think keeping the TH a mystery would have been better for the story. We also are introduced to a new character, Tolliver Grayson. I liked him but his story definitely took away from Rowan and Citra’s. Still, I recommend the book but not with near the enthusiasm I had for the first on.