Related Clues:

• Cause of a blowup
• It can be a blast
• Creator's sine qua non
• It may be blown
• Brainchild
• Theory
• It comes to a head
• Creative nugget
• Exclamation point?
• A&E alternative
• Inventor's "step one"
• It may come with charges
• Sneaking suspicion
• SHO alternative
• Theme