Why We Die is the third of the four Zoë Boehm novels by Mick Herron. Each of them (so far) is quite different. In the first, Down Cemetery Road, Zoë is not at the center of the action (which shifts from comedy to thriller), and in the second (The Last Voice You Hear), Zoë's somewhat morose inner voice sets the tone for a story that is ruminative until it, too, shi...