For two years, serial killer Henry Louis Wallace stalked the city of Charlotte, North Carolina, undetected, attacking young Black women – almost all of whom he knew personally as neighbors, friends or coworkers. Now, 25 years after his conviction as Wallace remains on death row, a new “20/20” reports on the latest details of the case, questions whether the women’s race played a factor in the rigor of police investigations. Watch a new ABC ‘20/20’ every Friday at 8PM on your local ABC32.