MIAMI-DADE COUNTY, Fla. -- Miami-Dade police are revisiting one of the oldest cases on county books -- the disappearance of a 14-year-old boy nearly 30 years ago.

Carol Allard, who lives in East Hartford, Conn., still agonizes about her son, who vanished while staying with relatives in South Miami-Dade.

"I'm always looking and wondering. It's been a nightmare," Allard said.

Paul Allard was last seen on Aug. 13, 1976. He had called his mother to tell her he wanted to come home. They made plans for an uncle to pick him up.

On that same day, Allard walked along Bird Road near 112th Avenue, headed for a 7-Eleven store. He never got there.

Allard's relatives from Orlando and South Miami-Dade met with Dinorah Perry, the founder of Missing Children International Ministries, and they persuaded police to reopen the case.

"Somebody somewhere knows something," Perry said. "Back in 1976 there was no DNA, no computer technology. It was not available then."

Carol Allard said, "I would love to … have peace of mind and know where my son is."

There is a $1,000 reward in this case from Miami-Dade CrimeStoppers. Detectives are starting from scratch in this, their oldest missing child case, because there are no records left of missing children before 1978.

Now, all records are kept for 100 years.