Possible Clues:

• Knightley with an Academy Award nomination for 'The Imitation Game'
• Core
• Benedict's 'The Imitation Game' co-star
• Knightley of 'Pride and Prejudice'
• Co-star of Benedict in 'The Imitation Game'
• "Pirates of the Caribbean" actress Knightley
• 'Pirates of the Caribbean' actress Knightley
• Knightley who played half of 24-Across
• Knightley of 'A Dangerous Method'
• Knightley in the movies