Ross Lynch Didn't Know Who Jeffrey Dahmer Was Before Playing Him in 'My Friend Dahmer'

Ross Lynch sits next to director Marc Meyers during their appearance on Build Series in New York City on Wednesday (November 1).

Together, the two chatted about their new film, My Friend Dahmer, which opens in theaters on Friday, November 3rd.

Ross spoke earlier with US Weekly about his research on the serial killer.

“When I was on Disney Channel, I was thinking of the projects that I wanted to do next,” Ross says. “I wanted to do something that was darker, a more intense character.”

“When the script fell into my lap, at the time, I didn’t know who Jeffrey Dahmer was. It’s a little bit before my time.”

And his research was intense, too.

“I started researching Dahmer and he’s tragically interesting,” he adds. “The crimes that he committed are, unfortunately, terrifying and devastating. But they are interesting.”

15+ pics inside of Ross Lynch…