Related Clues:

• Deep purple
• Juicy reward?
• Desirable reward
• Extremely desirable
• Horner’s pie extraction
• Prune, once
• Smooth-skinned fruit
• Coveted assignment
• Prune-to-be
• Fruit
• Professor of board games?
• Clue professor
• Professor played by Christopher Lloyd in 'Clue'
• Fellow suspect of Mustard
• Lump of fruit