America's prisons house a "staggering number" of convicts who didn't commit the crime but said under duress that they did - so says our guest, lawyer Alan Hirsch, who testifies in trials across the country as one of the leading expert witnesses on false confessions. He took the stand not long ago in the chilling case of teenager Brooke Skylar Richardson, who was pressured by police to say that she'd murdered her baby, who was actually stillborn, and then burned the body; the jury acquitted her after forensic studies showed that the baby had never been burned at all. Alan says one problem is that police learn to lie about evidence and use clever interrogation methods that break down suspects' defenses, whether they're actually guilty or not. Some states are requiring police to film their whole interrogations - a step forward but not a panacea.