Conventional crime-prevention programs tend to be expensive, onerous, and ineffective. Could something as simple (and cheap) as cognitive behavioral therapy (CBT) do the trick? That’s the question we try to answer in this episode. It’s set in Chicago, where violent crime continues to thrive (its homicide rate is more than triple New York’s). Chicago is also home to the Crime Lab at the University of Chicago, a network of researchers who try to find empirical solutions to crime and violence.