The British actress was known for playing Polly Gray in Peaky Blinders and Madame Kali in Penny Dreadful. She also lent her voice to His Dark Materials. Former Homeland star Damian Lewis announced the news of his wife's death on Twitter. “I’m heartbroken to announce that after a heroic battle with cancer, the beautiful and mighty woman that is Helen McCrory has died peacefully at home, surrounded by a wave of love from friends and family," he wrote. "She died as she lived. Fearlessly. God we love her and know how lucky we are to have had her in our lives. She blazed so brightly. Go now, Little One, into the air, and thank you."