In June 2015, two vicious convicted murderers broke out of the Clinton Correctional Facility in Dannemora, in New York's North Country, launching the most extensive manhunt in state history. Aided by prison employee Joyce Mitchell, double murderer Richard Matt and cop-killer David Sweat slipped out of their cells, followed a network of tunnels and pipes under the thirty-foot prison wall, and climbed out of a manhole to freedom. For three weeks, the...