Wendy Jerome was taking a break from her family that Thanksgiving. The 14-year-old Rochester girl visited a friend’s for several hours on Nov. 22, 1984, before heading home. Wendy would never make it. Hours later her body was found in an alcove near a pair of public schools off the city’s Webster Ave. “Wendy was fully dressed, her pants were undone, and she had a coat covering her face — her own coat,” Sgt. Gus Venosa told the Rochester Democrat and Chronicle in January. She had been raped and beaten to death. But the killer left something behind in the slain teen’s underwear: His DNA. And investigators also knew the killer was African-American.