Code Black

When every computer on Earth dies simultaneously, software engineer Charles Walter is seventy miles from home, alone in the Colorado wilderness. By the time he reaches Denver, the city is burning. His house is ransacked. His wife Emily and seventeen-year-old daughter Sophia are gone, fled north toward safety with only a hastily scrawled note: Find us in Sheridan, Wyoming.
Five hundred miles of apocalyptic wasteland separate Charles from his family. Nuclear power plants are melting down acros...