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We recently brought you an exclusive interview related to the John Wayne Gacy case.

For decades, Sherry Marino had doubts that the body in her son’s grave was actually her son Michael.

Recently, DNA results showed her hunch was right.

Now the investigation begins into what happened.

The Marino family would like to obtain documents that could confirm once and for all, whether these suspicions are true because it could provide answers about what happened to their son.

WGN's Larry Potash has the story.