We’ve all seen the disturbing photo of the 4-year-old boy in the back seat of a car with two adults passed out due to a heroin overdose. In an Oz exclusive, we visit him in his new home. Then, is there a racial divide in how we handle heroin addiction? Lisa Ling investigates if the color of your skin could determine whether you get rehab or go to jail. Plus, ABC’s Elizabeth Vargas reveals the night her alcohol addiction almost took her life.