5. The show worked to be as realistic as possible
The production on Mindhunter went to great lengths to be as realistic and accurate as possible—beyond McCallany’s adopted cigarette habit. From the 1970s-era cars, clothes, and buildings, all the way down to the type of haircut that Bill Tench had, everyone on the series tried their best to make it a lived-in world.
“The serial killers who we’re interviewing are the historical serial killers, and we’re talking about the crimes they really committed,” McCallany says. “We’ve tried to be as accurate as possible, and so I thought it was a good thing for me to leave my vanity behind on this one. That’s why I gained the weight, and I let all the gray come through in my hair. They give me this crazy flap top haircut, because that’s what a guy like Bill—who had been in Vietnam and is a cog in the FBI machine—would have had.”
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