Two-time Academy Award nominee Ralph Fiennes and Rachel Weisz head the cast of the thriller filmed on location in Berlin, London, and Nairobi and numerous other parts of Kenya. In a remote area of Northern Kenya, the region's most dedicated activist, the brilliant and passionate Tessa Quayle (Rachel Weisz), has been found brutally murdered. Haunted by remorse and jarred by rumors of his wife's infidelities, mild-mannered British diplomat and Tessa's widower, Justin Quayle (Ralph Fiennes), surprises himself by plunging headlong into a dangerous odyssey. His eyes are soon opened to a vast conspiracy at once deadly and commonplace, one that has claimed innocent lives - and is about to put his own at risk.