In the mid-1980s, Wayne Williams’ appeals attorney Lynn Whatley anonymously receives shocking new evidence connecting members of the Klan to the murders. An undercover informant and several investigators take the stand as a judge evaluates Williams’ plea for a retrial. Forty years after the murders began, the victims’ family members gather to grieve, discuss Williams’ guilt or innocence, and assert their unwavering commitment to finding out what really happened to their children. Series finale.