Usually when a writer has one of their books released in the U.S. after it’s already been available elsewhere for a while, the new version is usualy the same as the original. But in the following email interview, writer S.L. Huang talks about how the new version of her 1984 mathematic sci-fi thriller Zero Sum Game (paperback, Kindle) — the first novel in her Cas Russell series — is definitely an improvement on the original.