When an FBI agent is found dead on the white slopes of Quandary Peak in Colorado, a brilliant but volatile agent is drafted in from Denver to lead the investigation. Fighting personal demons, pressure from Washington and dwindling leads, the case stalls and a career falters But as summer comes, Quandary Peak has disturbing new secrets to give up. And as one agent fights failure and hopelessness, another has left behind a trail that leads to a man with a dark past and even darker intentions.