Book excerpt: The outbreak tore the U.S. in two. The east remains a safe haven. The west has become a ravaged wilderness. They call it the Evacuated States. It is here that Henry Marco makes his living. Hired by grieving relatives, he tracks down the dead and delivers peace. Now Homeland Security wants Marco for a mission unlike any other. He must return to California, where the apocalypse began. Where a secret is hidden. And where his own tragic past waits to punish him again. But in the wastelands of America, you never know who -- or what -- is watching you.