Peter Ash must follow his closest friend, Lewis, into the criminal underworld when secrets from the past threaten everything they hold dear in this propulsive new thriller from the bestselling and award-winning series.     Lewis has helped Peter Ash out of more trouble than Peter cares to remember.  So he doesn’t hesitate when Lewis asks a favor in return. Lewis has left his criminal past behind, but a former associate may be in trouble, and he and Peter must drive into the teeth of a blizzard to find him. When they discover blood in the snow and a smoldering cabin, both men know things are bad. Then they learn that someone has stolen notebooks full of incriminating secrets about Lewis's long-ago crimes, and realize the situation is much worse than they'd thought.     To save Lewis’s wife, Dinah, and her two boys, Lewis and Peter must find the notebooks. With Peter's longtime girlfriend, June Cassidy, they begin the search—facing ruthless and violent foes at each turn, including one powerful person who will stop at nothing for revenge. Will Peter and Lewis be able to keep that dark past buried? Or will they need to step into the darkness to save the people they love most?