Possible Clues:

• Playwright suits hit musical to a 't'
• November playwright
• American dramatist presents adaptation of Emma on time
• 'The Anarchist' playwright
• "The Verdict" screenwriter
• 'Oleanna' playwright David
• 'The Winslow Boy' screenwriter/director David
• 'Things Change' director
• 'Hoffa' screenwriter
• "The Cryptogram" playwright