Related Clues:

• Explosive topic?
• Seed of invention
• O'Neill title character
• O'Neill figure
• What may come to mind
• Just think of it
• It could make a molehill out of a mountain
• Prelude to a solution
• "The Closer" airer
• Big bang cause?
• Blast cause
• Rubble creator
• Brainy inspiration
• Dynamite relative
• It may come to a head