She’s also been the Blanche DuBois to Paul Mescal’s Stanley Kowalski in Rebecca Frecknall’s revival of A Streetcar Named Desire, and turned up in the latest installment of Charlie Brooker’s Black Mirror, playing an AI assistant in one of the anthology series’ more emotional, meditative episodes.

The Spanish-British actor says she felt apprehensive going into Streetcar’s recent stint at the Brooklyn Academy of Music (before that, it had been a hit in the West End). “We were taking one of the most-loved American plays of all time to New York as a bunch of Brits with quite an unconventional take on it,” she recalls. “I was truly anticipating potential rejection from an American audience. I knew about going to New York for a year and a half, so I had a year and a half to mentally prepare for a panning.”

Eventually, however, Ferran let herself see the experience “as an experiment.” She explains: “I thought, Let’s just offer something with an open mind and an open heart and see what happens—and if they don’t like it, that’s totally okay! Cut to preview one, and the New York audience was so vocally generous.” The six-week run quickly sold out as reviewers raved about Ferran’s revelatory take on the Southern belle.

“I remember after that first show, we were all staring at each other, wide-eyed on stage, thinking, Oh my God, I think they’re loving this!” Ferran goes on. “Being an actor is a strange thing, because you are presenting yourself as part of the art—you’re collectively telling a story, but you’re so personally involved. When something doesn’t work, I can’t help but take it a little personally. It’s your face, your body, brain, and soul that’s part of the story.”

Streetcar is an intense play on its own, but to exit the stage door every night and be confronted with high-octane New York City, too, made the period perhaps the most feverish six weeks of her life. “Thankfully, my body is very obedient when I have a job to do—and when the writing is so good, and your company of actors are so talented and generous, the job is easier… and dare I say it, fun,” Ferran says. “But I couldn’t have done another show [afterward]! I needed to lie down and not move.”