Possible Clues:

• Clue in 'The Da Vinci Code'
• 28-Down, to Tokyo
• Turn of phrase?
• What oven cleaner is of no relevance?
• "The eyes" is one for "They see"
• Word which is another rearranged
• Puzzle continued unnoticed
• Scramble of letters (to make trestle, perhaps)
• A couple of beasts as in 10 12 9 11
• Horrid glances from Charles Grodin?