The documentary, titled Black Widow Granny? and filmed partly in Augusta, includes interviews with relatives of the victim in addition to the suspect, 77-year-old Betty Neumar, who has otherwise shunned media attention.
According to the BBC's Web site, the documentary will air Tuesday.
Ms. Neumar attracted worldwide attention when she was arrested at her Cambridge Court home in Augusta in May 2008.
The bullet-riddled body of Harold Gentry, her fourth husband, was found in 1986 in their North Carolina home about 45 miles east of Charlotte. An indictment handed down by a Stanly County, N.C., grand jury alleges that she sought out a former police officer and her neighbor to kill her husband in the months before his death. She needed cash and was trying to collect on her husband's $20,000 life insurance, the indictment charges.
The case was reopened last year after two decades of pleading from Al Gentry, her dead husband's brother.
Ginger Efrid, of the Stanly County District Attorney's Office, said Friday that a trial date has not been set for Ms. Neumar.
After her arrest, authorities in Ohio, Florida and Augusta re-examined the deaths of her first child and four other husbands.
Richmond County investigators seized the ashes of her fifth husband, John Neumar, from their home in Augusta. They had the ashes examined for traces of arsenic, which authorities thought could have been a factor in Mr. Neumar's death. The test results were negative.
Reach Adam Folk at (706) 823-3339 or email@example.com
ON THE WEB
For more information about the documentary, visit www.bbc.co.uk/programmes/b00nq75b.