Related Clues:

• Crafty scheme
• Artful stratagem
• Basis for a whodunit
• Tricky plan
• Conspiracy theorist's subject
• Con man's device
• Cabal's plan
• Schemer's thing
• "Ponzi" or "rhyme" follower
• "The ___ thickens"
• Part of the planning for many a surprise birthday party
• Whodunit essence
• Slick trick
• Hugger-muggering
• Strategem