Police across Tamaulipas, Mexico's north-eastern state are hunting Chano Salgado. A reclusive young widower and political apostate, Salgado goes on the run after he is persuaded to blow up the pipelines of a sluicing operation sucking the local groundwater dry. Meanwhile, Evan Hatch, a London-based flack for an "issues-management" PR firm, is dying from leukemia. Hoping to find a donor, he tracks down his long-lost brother in Mexico (from where he...