To his credit, Brown's yarn is somewhat more tightly constructed than his earlier Langdon vehicles, though its best parts are either homages or borrowings; the punky chick assassin who threatens Langdon, for instance, seems to have wandered in from a Stieg Larsson set, while the car-chase-and-explosions stuff, to say nothing of Langdon's amnesiac wanderings around the world, would seem to be a nod