The Peacock documentary features interviews with former Grey's Anatomy writer Elisabeth Finch's friends and colleagues who have accused her of lying about details of her life.
"It's really a story about how victims can find a new way to take control of the narrative," director Jesse Sweet said of the documentary, which features interviews with Alissa's sister Sarah.
The documentary will revisit the Diff'rent Strokes actor's life after the NBC sitcom ended, as well as the circumstances surrounding his death in 2010.
The third season of the Oxygen True Crime show will feature the horrific killings of world champion boxer Vernon Forrest, as well as beloved community members.