Hello Big Brains listeners! Our podcast is coming up on an important milestone … our 100th episode! As part of the month-long celebration, we’re looking back at some of our favorite episodes—highlighting a different world-changing idea or discovery each week.

For the more than 20 million people with a felony record, incarceration doesn’t end at the prison gate. They enter what University of Chicago scholar Reuben Jonathan Miller calls the “afterlife” of mass incarceration.

Miller, an assistant professor at the Crown Family School of Social Work, Policy and Practice, is the author of a new book, Halfway Home: Race, Punishment and the Afterlife of Mass Incarceration—an intimate portrait that draws on his sociological research and personal experiences. It’s a unique sociological look at our system of mass incarceration and how it continues to imprison people after their sentence and also punishes their families.