Related Clues:

• Bit of trickery
• It may thicken
• What paranoid people see everywhere
• Bit of subterfuge
• With 38-Down, common device on 'The Twilight Zone'
• Machinate
• Pyramid, for instance
• Grand plan
• Building site
• Sleight of hand
• Put-up job
• Conspiracy
• Whodunit's essence
• Sneaky plan
• Fraudulent activity