Every year 10 million people funnel in and out of America's jails and prisons. And every year some of them get lost. Recently there have been two high-profile cases of such inmates — one who got out years too early, and one who stayed years too long. Both had disastrous consequences.
In January, Evan Ebel walked out of a Colorado prison four years too early. Two months later, he allegedly rang the doorbell of Tom Clements, the head of the Colorado Department of Corrections, shot him in the chest and killed him.