Suspect Confesses to Murder He Didn't Commit

Fifteen-year-old Katie Hamlin's nude and partially burned body was found on July 2, 2002, along the famous Cherokee Trail of Tears in Georgia's Appalachian Mountains.

Roberto Rocha, the 20-year-old son of a minister, is questioned by police about the murder of 15-year-old Katie Hamlin.

(ABCNEWS.com)

For two-and-a-half years, the murder went unsolved, and police became desperate for a break in the case.

Roberto Rocha, a 20-year-old landscaper and the son of a minister, became a suspect in the crime. Rocha was a schoolmate of Hamlin's, and it seemed he had some kind of relationship with the young girl -- his number was found in her cell phone's speed dial.

Rocha went to the police voluntarily to be questioned. After all, he had an airtight alibi: He's been out of the country, in Brazil, the day Hamlin was killed.

Going Along With the Story

During the questioning, police accused Rocha of killing Hamlin, which he vehemently denied -- at first. But a rare look inside the interrogation room shows how suspects can become confused, frightened and disoriented, and sometimes confess to things they didn't do.

"I didn't kill nobody, man. What are you talking about?" Rocha said during the police interrogation.

The police sometimes stretch the truth about evidence, which happened in this case. "I got three witnesses saw your truck," a cop told Rocha, who said he would submit to a lie detector test.

The police changed tactics and began to threaten Rocha.

"You better start telling the truth, or I'm going to lock your damn ass up!" said a policeman. "You don't know what we know. You think we just picked you out of the blue? Now start telling the truth!"

Rocha had never been arrested, and according to his attorney, Brian Steel, he also has a low IQ, which made him particularly vulnerable to suggestion. "The child is 20 years old with a 12-year-old's mind," said Steel.

The police continued to challenge Rocha, acting as if his presence at the crime scene was fact. After more than two hours, Rocha said he became confused and exhausted. He and his attorney said that police told Rocha if he went along with them, he could go home.