Related Clues:

• Subject matter
• Signature tune
• English assignment
• Crossword topic
• Whodunit item
• Intimation
• Mr. Green's game
• School paper
• Whodunit board game
• Movie based on a board game
• This line or the next
• Central idea
• Mustard and Plum game
• Mrs. Peacock's game
• Footprint or thumbprint, perhaps