The government had an almost impossible task after the September 11th attacks: They had to try to stop terrorists before they did anything — in some cases, before they even committed a crime. Dr.

Host Ira Glass interviews Joe Amrine, who was falsely accused of murder. Rather than avoid the death penalty, Amrine said everything he could think of on the witness stand to get the jury to give him a death sentence.

Carl King, a self-taught investigator, talks about the murder case he's working on now—one the police think they've already solved. Carl got started in this business after freeing his close friend from prison.