Possible Clues:

• "20/20" creator Roone
• Creator of “20/20” and “Nightline”
• Roone who created "Nightline" and "20/20"
• Longtime TV exec Roone
• ABC News exec Roone
• Roone who created 'Nightline' and '20/20'
• TV news exec Roone
• Longtime ABC News chairman
• '20/20' creator
• ''20/20'' creator