In a way, it's the most classic cat-and-mouse game of all: A nimble graffiti writer dashes out into the night to leave his mark. Watching and waiting for him are the stronger—if less agile—NYPD Vandal Squad, whose sole mission is their arrest.

Paul was a cop. One night he was pulling second shift when he had a perfectly good idea: He'd stretch out in the back seat and take a little nap during his break.

Beau O'Reilly gets a chance to settle a 17-year-old score with the help of the Chicago police.

To find out more about the bridge Denise talked about in act one and the armed police who prevented pedestrians from crossing, This American Life producer Alex Blumberg talks with Lorrie Beth Slonsky and her husband Larry Bradshaw. They're paramedics from San Francisco who were visiting New Orleans for a convention when Hurricane Katrina hit.

The story of a series of misunderstandings with very dire consequences. Shaheen was stopped by the police, who looked at what was in his car and before Shaheen knew it, he'd come to the attention of some of the highest ranking officials in the Defense Department.

Hundred of Iraqi police officers have been killed since the United States invaded Iraq. One Boston cop, Jerry Burke, is trying to keep them on the job, and train them in Western police practices.

We hear the secret recordings that ended mob control of New York garbage collection, and talk to Rick Cowan, the NYPD detective who went undercover for three years to make them.

This is the story of some teenagers who were wrongfully convicted of murder and served 15 years in prison. DNA set them free, then convicted the two men who really did the crime.

It's another not-so-great period in Scott's life. This time he takes a job inside his profession, as a producer for a national commercial radio program.

We hear from Father Jim Kastigar, who got on the wrong side of Town Hall and suffered the kinds of consequences people in Cicero suffer. His parish was denied a permit to hold an outdoor religious ceremony they'd held peacefully for seven years, the youth group's tamale fundraiser was shut down by city inspectors and the parking lot near the church was deemed unfit for Sunday parking.

Host Ira Glass goes to jail in Bristol County, Massachussetts, where there's a large Portuguese community, and where even a law-and-order sheriff named Tom Hodgson opposes this particular immigration law. He also talks with inmate Jorge Aruda, who's being deported for a crime he already served his sentence for.

Ira talks with producer Blue Chevigny about how a prank caller taught her that when it comes to pursuing happiness, Carole King, the world of independent cinema and the New York City Police Department have a lot more in common than she ever imagined. He also talks with MIT Professor Pauline Maier, author of the book American Scripture: Making the Declaration of Independence.

We hear the first part of our story about Archer Daniels Midland and FBI informant Mark Whitacre. In this half, Whitacre inadvertently ends up a cooperating witness—and turns himself into one of the best cooperating witnesses in the history of U.S. law enforcement, gathering evidence with an adeptness few have matched.

Actor Matt Malloy reads a short story by Aimee Bender, from her book The Girl in the Flammable Skirt: Stories.

Monica Childs joined the Detroit police force because she hated cops, and wanted to change the system from the inside. She wanted to be an honest cop.

There are thousands of voices passing through your body right now on radio waves—signals from cellular phones and cordless phones, military transmissions and baby monitors. You're not supposed to listen in on these.