Host Ira Glass recalls the case of the so-called Detroit Sleeper Cell—four men, arrested in the weeks after 9/11, accused of plotting terrorist attacks. Ira explains that the entire program will be devoted to the story of the man who prosecuted the case...an up-and-coming prosecutor in the Department of Justice, Richard G.

Tim White used to be a gang leader in Chicago, but now he's a "violence interrupter" for a program called CeaseFire. Host Ira Glass talks to Tim about his work, and why he thinks it can keep young gang members from killing each other.

Three guys who go by the names Professor So and So, Jojobean and YeaWhatever spend part of each day running elaborate cons on Internet scammers. They consider themselves enforcers of justice, even after they send a man 1400 miles from home, to the least safe place they can bait him: The border of Darfur.

Reporter Petra Bartosiewicz tells the first half of Rick Convertino's story. The Detroit Sleeper case was one of the earliest Justice Department victories in the war on terror.