In this groundbreaking saga, Grey West wildly re-imagines America's past. Set twelve years after the Civil War, the Double Barrel series puts readers on a collision course with history...and zombies. IN THE WEST: Twin brothers John and James Barrel are the nation's deadliest Regulators--gunslingers with a license to kill from Abraham Lincoln. When an urgent telegraph from the President is cut off by a zombie attack, the Barrels must set out to find and kill the man responsible for the zombie scourge. IN THE EAST: Seventeen-year-old Violet Drake and her mute brother Sam have seen nightmares before, but nothing like the evil flooding the streets of New York City. After learning of a possible cure, the Drakes must race against time to find the one person who can help, a man known as the Wizard of Menlo Park. But first they must escape Manhattan before it's overrun by the undead. Four survivors. Two adrenaline-laced stories. One incredible journey that will pit them against the world.