On The Big Bang Theory, Sheldon often wore a t-shirt with The Flash’s logo on it, and even twice dressed as The Flash. So it’s hard not to imagine that he’d be a fan of S.L. Huang’s Cas Russell series, about a math-powered superhero. In the following email interview, Huang discusses the newest book in this series, Critical Point (hardcover, Kindle), as well as her upcoming (and unconnected) novella, Burning Roses (hardcover, Kindle).