Neptune’s Brood is a sequel (or at least, set in the same universe) as Saturn’s Children—and expands the scope from the solar system to interstellar travel. The main plot point is bank fraud, and in typical Charlie Stross fashion, it’s a not a throw-away McGuffin, but rather a well thought-out dive into a possibility for a new kind of currency you’d use between stars and the kinds of criminals that would take advantage of flaws in that currency.

FuzzyCo grade: A-