Related Clues:

• Chief plotter
• Crime boss
• Mastermind
• Influential person
• Spark plug, so to speak
• A-number-1
• Boss at the jewelry store?
• Head of a cabal
• Initial power source
• Sting target, maybe
• Project leader
• Gangbuster's target
• Phone the boss - he's responsible
• First one on the shift?
• The first one on the shift?