On August 22, 1994, court papers filed in Los Angeles Superior Court disclose DNA test results showing that O.J. Simpson’s blood genetically matches blood in the trail leading from the murder scene of his ex-wife, Nicole Brown Simpson, and her friend Ron Goldman. The pair had been found murdered two months earlier outside of Brown Simpson’s luxury town house in Brentwood, California, a Los Angeles suburb.
Prosecutors released the evidence a month after Simpson's second arraignment on July 22, 1994, where the retired football-star-turned-actor and pitchman pleaded "absolutely 100 percent not guilty" to the gruesome stabbings.
The DNA match between a single drop of Simpson’s blood and one collected from near the crime scene constituted a “genetic fingerprint” with staggering odds. Forensic scientist Robin Cotton, an expert witness at Simpson’s trial, testified that only one in 170 million people have the genetic blueprint of Simpson's blood and that small drop of blood found near the victims’ bodies. Defense lawyers vigorously questioned the reliability of the results and the integrity of the lab that conducted the tests.