Related Clues:

• 'Presto!' kin
• Cry of satisfaction
• "I see what you're up to!"
• ''Thought so!''
• Cry when a light goes on
• 'The penny drops!'
• Word of discovery
• 'I'm onto your scheme!'
• Lotion found in museum? There it is!
• I've got it!
• Sudden understanding
• There we are!
• There you are!
• Cry upon figuring out 66-Across
• "I'm onto your scheme!"