Audrey Marie Hilley (née Frazier, later Homan; June 4, 1933 – February 26, 1987), also known by the aliases Robbi Hannon and Teri Martin, was an American murderer and suspected serial killer.
Frank's autopsy, performed with his wife's permission, revealed swelling of the kidneys and lungs, bilateral pneumonia, and inflammation of the stomach.
Frank had maintained a moderate life insurance policy, secretly taken out by Marie at the time of his initial illness, that she redeemed for US$31,140 (equivalent to $176,300 in 2023).
Three years later, Marie took out a $25,000 life insurance policy on her daughter Carol; an additional $25,000 accidental death rider took effect that August, for a total of US$50,000 (equivalent to $233,600 in 2023).
A month after Carol was admitted to the hospital, her physician reported she was suffering from malnutrition and vitamin deficiencies, adding that he suspected heavy metal poisoning was to blame for the symptoms.
University physicians concentrated their investigation on the possibility of heavy metal poisoning, noting that Carol's hands and feet were numb, she had nerve palsy causing foot drop and she had lost most of her deep tendon reflexes.
Subsequently, investigators found that both her mother and her mother-in-law, Carrie Hilley, had significant, but not fatal, traces of arsenic in their systems when they died.
The remains of Sonya Marcelle Gibson, an 11-year-old friend of Carol's who had died of indeterminate causes in 1974, were also exhumed and examined,[1] but were found to contain only a "normal" amount of arsenic.
Two police officers who had been dispatched to a domestic disturbance at the Hilley household also reported coming down with nausea and stomach cramps after drinking coffee that Marie had offered them.
Under the alias "Robbi Hannon", Marie travelled to Florida and met a man named John Greenleaf Homan III.
During the trip, Marie called Homan as "Teri" and informed him that Robbi had died in Texas, saying there was no need for him to claim the body because it had been donated to medical science.
In November 1982, after changing her hair color and losing weight, Marie returned to New Hampshire and reunited with Homan, posing as his "deceased" wife's sister.
An obituary for Robbi Homan appeared in a New Hampshire newspaper, but aroused suspicion when police were unable to verify any of the information it contained.
Homan's concerned co-workers discovered that the Medical Research Institute of Texas, where "Robbi's" body was supposedly handed over for study, was nonexistent, as was the church that eulogized her death.
While Homan's workplace was audited and no embezzlement found, authorities still believed that "Teri Martin" was possibly a fugitive bank robber named Carol Manning (later disproven) or wanted on other outstanding charges.
While being interrogated by Vermont state troopers, she confessed that she was wanted in Alabama on check kiting charges and divulged her true name.