controlled substance list. the bill faces an uphill battle in the senate. now back to "dateline." ♪♪ after celebrating thanksgiving with friends, ashlea harris headed back to mall. to prepare for black friday. but nothing could prepare forefor the horrors when she returned home, brutally murdered and apartment set on fire. neighbor told police he noticed a car around the time of the killing, a black infinity. the same model an ex-employee drove. coincidence? keith morrison was about to find out. here's "black friday." >> reporter: on the saturday morning after black friday, 2014, homicide detective jerry cedillo followed a black infiniti into the parking lot of the hulen mall. he watched as the passenger, a