"The extraordinary new Lucas Davenport thriller from #1 New York Times-bestselling author and Pulitzer Prize-winner John Sandford. They call them Travelers. They move from city to city, panhandling, committing no crimes-they just like to stay on the move. And now somebody is killing them. Lucas Davenport's adopted daughter, Letty, is home from college when she gets a phone call from a woman Traveler she'd befriended in San Francisco. The woman thinks...