one of the most famous cases happened in england when a teenager, richard buckland, confessed to thed murder of a young girl, but dna testing proved he didn't do it. >> most people don't understand how someone can be made to falsely confess, but as an empirical matter, the fact is that they occur and they have been documented, so many have been documented. the question should not be do they occur? but rather why do they occur? and what can we do to minimize them? >> most people who are questioned by police don't realize they can leave the interrogation any time, meaning they don't have to put up with relentless questioning. but trying to explain to a jury why someone would confess to a crime they didn't commit is always difficult. >> confessions override lack of evidence, improper searches, and everything else. so if you want to prosecute somebody, what's the best thing in the world? you have a confession. >> it just got to where i just agreed with what they said just to get them off my back, 'cause i know they would have stopped the questions after i agreed with them. >> life has be