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They decided to wait to present Stewart their findings until close to the end of the yearlong production.
I believed the book word for word, Dinerstein said.
A couple of weeks later, they met in New Orleans for lunch.
By the time the meal was over, Stewart chose Dinerstein over other producers who were courting him.
He didnt have closure.
And I thought this show could be his closure.
It could be almost like a therapeutic experience.
I found him to be very genuine.
But he told Stewart from the start that he would conduct his own investigation.
Gary was making pretty bold claims in the book, Davidson said.
I wasnt a believer either.
I was somewhere in the middle.
(Stewart declined to be interviewed by Vulture for this story.)
Garys not an actor.
When he showed us where his father left him in the stairwell, he broke down, Dinerstein said.
Its just really hard for him.
He just wears his emotions on his sleeve and is easily triggered by all of it.
He knows we had to tell all sides of it, Dinerstein said.
But he feels what we presented is irrelevant.
Six months after production ended, the producers still struggle with their conclusions about Stewart.
Davidson is convinced that Stewarts father was not the Zodiac Killer, but Dinerstein is not so sure.
I dont think were ever going to know who the Zodiac Killer is, he said.
For Davidson, the lingering questions are more about Stewart himself.
I dont believe it is a con.
I think this man really believes this.
But is there an element of opportunism?
That part we dont know.
In Stewarts last moment in the series, he drives away in a car featuring a VANBEST vanity plate.
Dinerstein says he noticed it at their first lunch and it pinged me as unusual.
One way to look at that is to ask if hes trying to cash in, Davidson said.
That took another, final surprising turn.
I think he was quite pissed at me with that last interview and he felt blindsided, Davidson said.
So Gary is a huge fan of the series.
How is that even possible?
