Possible Clues:

• Unholy alert, but that can't be for the Confirmation
• Denial from victim with concrete overcoat
• Counterargument
• Defence against an accusation
• Cavil at Tube-rail returns showing invalidation
• Denial of strike from head: actual lines
• Something cheeky, maybe, shown in genuine counter-argument
• Debate response
• Genuine about target for refutation
• Defence is behind in bona fide case