uncomfortable with the case. >> this is editor for an aruban newspaper. >> suddenly, they were on one side and he was on the other because they were investigating his son. >> we're about a mile away from the hotel where natalee holloway had been staying. and it was on this stretch of beach that joran van der sloot says that he left natalee early in the morning, alone. joran and the callpo brothers sent their summer in and out of jail. under interrogation, they changed their story dozens of time. but it didn't authorities any closer to the truth. >> there were many things they didn't do, small detail, big details, they closed their attention to. >> and this lack of willingness to push hard, you think, is because they were familiar with joran's father? >> i think so, i'm convinced of that. >> do you think he used his influence to protect his son? >> sure, because that is his son. he would have gone to any lengths to try to save him. he knew very well what happened.