The drifter
(Book)

"Peter Ash came home from the wars in Iraq and Afghanistan with only one souvenir: what he calls his 'white static,' a crackling claustrophobia from post-traumatic stress that has driven him into the mountains, to sleep under the stars. But when a friend from the Marines commits suicide, Peter returns to civilization to help the man's widow with some home repairs. Under her dilapidated porch, he finds more than he bargained for: the largest, ugliest, meanest dog he's ever encountered, and a Samsonite suitcase stuffed with cash and explosives. As Peter begins to investigate this unexpected discovery, he finds himself at the center of a plot that is far larger than he could have imagined--and it may lead straight back to the world he thought he'd left for good." -- From dust jacket.