Calculating restitution for victims of child pornography.

How investigators nabbed a key member of a group called “Lost Boy.”

What happens when a decades old video, featuring the artist Larry Rivers’ prepubescent daughters bare-chested, is claimed both as child pornography and as an important part of the archive of a major American painter.

Featuring the debut of the “Ghost Sex Defense.”

The “Shaggy Defense,” the “Little Man Defense,” and more—live from R. Kelly’s 2008 child pornography trial.