Related Clues:

• Mustard and Plum game
• Mrs. Peacock's game
• Footprint or thumbprint, perhaps
• Detective's discovery
• They come to those who wait
• Puzzle part
• Whodunit plot element
• Words of advice
• Waitstaff's due
• What waiters wait for
• Gratuities
• Answer's opposite
• Crossword puzzle?
• Waiting rewards
• Voluntary offerings