Related Clues:

• Not do openly
• Filch
• Underhanded one
• Chowder morsel
• Skulker
• Quahog, for one
• One who won't tell
• Crafty one
• Symbol of happiness
• "B.C." money
• Be furtive
• ___ attack
• Slippery sort
• Steamer, e.g.
• Move quietly