A Summerville man pleaded guilty Wednesday to the 2006 rape of an 82-year-old woman.

Brandon V. Johnson, 30, pleaded guilty to first-degree criminal sexual conduct and was sentenced to 15 years in prison.

Johnson will get credit for the time he's served in jail since August 2008. He will have to serve 85 percent of the seven years that remain of his sentence before he can be eligible for parole.

Johnson was scheduled to begin his trial next week. It was the second time he was expected to face a jury. A deadlocked jury led to a mistrial in 2008 in the case.

During the original trial investigators said they had found semen but there was no DNA profile, according to prosecutors.

Investigators explained during the trial that male DNA can often be masked behind the woman's DNA, prosecutors said.

Since that time, the State Law Enforcement Division has been conducting a new type of DNA test.

Investigators resubmitted his sample and it was a match to Johnson or any of his male relatives, according to prosecutors.

Ninth Circuit Assistant Solicitor Shannon Elliott was the prosecutor on the case. They planned on presenting the new DNA evidence next week.

On the night of June 9, 2006, Johnson raped the woman at her James Island home, according to prosecutors.

The victim reportedly cried for help and called her assailant a "sick son of a b----," according to a Charleston County Sheriff's Office official who responded to her Harbor View Road home and testified during the 2008 trial.

Another sheriff's official quoted Johnson as saying the sex was consensual but that he ran out of the house because the appearance of a young black man having sex with an older white woman didn't look good.

Five witnesses reported seeing the nearly naked man on top of her before he ran out of her living room through a back door. The attack is alleged to have begun about 8 p.m. and to have lasted until early in the next morning.

The victim, who will not be identified, was suffering with Alzheimer's Disease at the time of the trial and was unable to testify.

She has since passed away, according to prosecutors.

Johnson is currently serving a 15-year sentence for a trafficking cocaine charge he pleaded guilty to in 2008 in Dorchester County, according to court records. The drug charge was pending when he was arrested in the rape case, according to prosecutors.

Reach Natalie Caula Hauff at 937-5594 or Twitter.com/ncaula.