Related Clues:

• The Doctor?
• Pardon?
• At which time
• Question not asked in this puzzle's theme words
• 'Never heard of her'
• "Are you serious?!"
• "Never heard of her"
• "__ said so?"
• '___ Let the Dogs Out'
• How come there's always a question mark against it?
• Part of WTF
• Incredulous reply
• It's asked for a reason
• Know-__
• "__ Harry Met Sally..."