For more than three years, Fred Roberts has waited for his mother's killer to be brought to justice.
This week, South Daytona police said they may never be able to give Roberts, 61, the peace he wants.
Officers on Wednesday closed their investigation into the deaths of Volusia County retirees Goldie Robinson and Arthur Sheldon, whose bodies were found in 2010 in the yard of Robinson's neighbor at Daytona Twin Oaks mobile-home park.
More on deaths of Goldie Robinson, Arthur SheldonAugust 2011: Man who pawned dead woman's generator gets probation
January 2011:More charges lodged in Goldie Robinson, Arthur Sheldon case
January 2011:Woman connected to Goldie Robinson's death transferred to Volusia jail
December 2010:Fraud, forgery arrests in case of man, woman, found buried in neighbor's yard in South Daytona
- 2nd body found in search for Goldie Robinson
- Fraud, forgery arrests in case of man, woman, found buried in neighbor's yard in South Daytona
South Daytona, FL, USA
"We're at a standstill," police Capt. Doug Quartier said.
Police say the neighbor, Kimberly Smith, 48, is the prime suspect in the killings. No one is talking to the police, however.
So although a medical examiner in May 2012 declared the deaths a homicide, a cause of death could not be determined and no one has been arrested.
"I still have nightmares," Roberts said. "I can't get closure to this. And I'm sure my mother is not resting in peace because of this."
Robinson lived across the street from Smith, who befriended the retired meatpacking-plant worker and Denny's waitress.
Smith told Roberts and Robinson's friends from First Baptist Church of South Daytona that Robinson had gotten married and was on an extended honeymoon, investigators said.
But Roberts didn't buy it. In August 2010, he drove from his home near Baltimore to South Daytona, where he found Smith's son and his family living in Robinson's home.
Her body was found in a shallow grave Sept. 3.
Smith, who has a long history of fraud and theft convictions, is serving a 15-year prison sentence after being convicted of numerous counts of fraud and elder exploitation of Robinson.
Roberts, whose brother, Brian, died in 2012 at age 46, said he hasn't given up hope that the crime will be solved.
"That's my mom," he said. "And I'm going to go to the world's end to make sure she gets justice."
Sheldon told relatives in October 2008 that he had found the woman of his dreams: Smith. He was 66 when he was last seen in early 2009, not long after he cashed a $90,000 certificate of deposit and gave $43,000 to Smith, court documents show.
His body was found Aug. 25, 2010 in a plastic bag in a garbage can.
Smith's son, Samuel Adam Smith — also known as Adam S. Samuel — pleaded no contest to fraudulent use of Robinson's personal information.
He violated probation by stealing $400 in 2012 from a pizza parlor where he worked and was convicted of grand theft.
Last month, Smith was convicted of fleeing and eluding, child abuse and traffic crimes. He began a five-year prison term Wednesday.
His wife, Chrystal Cash Smith, 29, pleaded no contest to fraud-related charges in the Robinson case and to drug possession and was sentenced in 2012 to three years of probation.
Kimberly Smith's boyfriend, David Enos, 41, with whom she lived, is serving four years of probation for pawning Robinson's generator. He now lives in Pennsylvania.