Related Clues:

• 'Beats me!'
• 'Don't ask me'
• 'I have no idea!'
• 'Beats me'
• Perplexed pronouncement
• 'Search me'
• 'I have no idea'
• 'Dunno'
• 'No clue'
• Not the faintest idea
• "Beats me!"
• How to interpret 20-, 38-, and 56-Across
• What the befuddled have
• 'I haven't a clue'
• ''I have no idea!''