Related Clues:

• (On the) downlow
• Shady
• Full of cunning
• " ___ & the Family Stone"
• Family Stone's head
• Vulpine, in a way
• One with a Rocky career
• "You ___ dog, you!"
• __ as a fox
• Sneaky and smart
• Adjective for 22-Down
• On the ___ (furtively)
• Like con artists
• Skilled at subtlety
• Stone or Stallone