The investigation zeroed in on the two children, Francis and Kenneth Choy, who escaped the fire unharmed because they were the only survivors and their accounts were crucial to understanding the events leading up to the fire.
The fire call came in at 4:56 AM on Thursday, April 17, 2003.
The emergency dispatcher stayed on the line with Francis Choy, keeping her talking while waiting for first responders to arrive, and instructed her to stay near the window of her bedroom.
Firefighters found no signs of smoke or fire from the street but observed smoke coming from a second-floor window and a person sticking their head out without calling for help.
Investigators noticed a strong, almost menthol scent described as similar to Vick's VapoRub, which was later identified as gasoline.
The accelerant detection dog alerted to the presence of a possible accelerant on two articles of clothing: Anne Choy's pajamas and Francis Choy's sweatpants.
Francis returned to the house because she was worried about her belongings getting stolen.
Kenneth Choy was found not guilty of murder and walked away free.
The post-conviction investigation uncovered racist and sexually explicit emails between prosecutors, evidence that gasoline residue was not present on Francis's sweatpants, and a witness who stated Kenneth admitted to starting the fire.
Judge Galus issued a ruling vacating the two murder convictions and one arson conviction, and there would not be a fourth trial. Francis Choy was exonerated.
After a fire in a Brockton, Massachusetts neighborhood killed a man and woman in their own home, the investigation zeroed in on two people – two children – who had escaped the blaze unharmed.
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Dark Downeast is an audiochuck and Kylie Media production hosted by Kylie Low.