reporter: katherine s son was 13 years old when he was killed. i don t think it s right for all these kids to be killed in this city and nobody was concerned about it. reporter: in 1982 wayne williams was tried for the murder of two young men and sentenced to life in prison. prosecutors said 22 of the children s murder were connected to him but he was never charged with other crimes. we want some closure. i want to know who killed my son. reporter: the gripping mystery and subject of a podcast and a new documentary debuts. the crime market a popular one today for podcast and docu series and serial, making a murderer, and up and vanished captivated their audiences but led to renewed interest by authorities and interest for us all. atlanta mayor made it clear they