Possible Clues:

• Knighted actor
• Actor Peter
• 'Dear Me' theatrical memoirist
• Peter --, actor
• Academy Award winner in "Spartacus"
• "Romanoff and Juliet" playwright Peter
• Peter . . . . . . ., late actor and raconteur
• Writer, director and actor and a noted raconteur and mimic
• Six-time portrayer of Poirot
• Acting icon Peter