||On April 14, 2017, a New York City woman was pushed from a subway platform onto the tracks. She was rescued and the attacker fled.
||The victim’s jacket and dress were collected as evidence.
||The New York City Office of the Chief Medical Examiner crime lab created DNA mixture data from different areas of the clothing.
||The lab was able to exclude the defendant from many of the dress and jacket samples. However, using thresholds, the lab could not include or exclude him from 3 sampled areas.
||The computer separated the three “inconclusive” DNA mixtures into genotypes. Comparison with the defendant found exclusionary match statistics, down to one in 418 octillion. These very small numbers showed that Mr. Stephenson's DNA was not on the victim's clothing.
||On June 29, 2018, DNA analyst Jennifer Hornyak testified before a New York City jury about the results.
||On July 5, 2018, Mr. Stephenson was found guilty of assault and sex abuse, but acquitted of attempted murder.