instead, she became embroiled in a shocking murder that made headlines around the world. doubts about the case surfaced almost immediately. with her conviction now being appealed, i went to italy to review the evidence for myself. >> reporter: almost immediately after police say she confessed to her crime, amanda knox recants. she tells her parents she broke under stress. in court she would tell jurors how a police officer struck her from behind, how she was denied water, food, a translator. and how, she says, under pressure by police she was asked repeatedly to dream up, imagine scenarios for how it could have happened. in a rare interview, the prosecutor of amanda knox agrees to sit down for an extensive on-camera discussion of the evidence. it was an interview he later