raided, his notes confiscated and the journalist placed under arrest, though later released without charges. police surmised he knew so much about the killer, he just might be the killer. then preston's phone range. >> i thought it was a joke. then they said, no, mr. preston, this is not a joke. we are coming to get you. this is owe bligtory. you tell us where you are. that will save everyone a lot of trouble. preston would find himself at the door of the prosecutor's office here in perugia where he thought he would spend a few minutes answering just a few questions. >> i had never understood how brutal psychologically brutal an interrogation is. you feel absolutely helpless. >> and the chief interrogator was and is? >> juliano mignini this prosecutor. let me tell you something, he knows exactly what he is doing.