“It was a non-negotiable thing for me,” John Krasinski said of his decision to cast deaf actress Millicent Simmonds to play the role of Regan in “A Quiet Place” while speaking with Rosamund Pike for Variety‘s “Actors on Actors.”

It’s important to have an organic performance, he said, but the more important reason for her casting was that “I needed a guide,” Krasinski said. “I was writing a movie about a family who had a deaf child, and I know nothing about that. I needed someone to walk me through, ‘what do you feel when you wake up in the morning to be the only person who can’t hear in your family?'”