Related Clues:

• Agent that handles an apparatus
• Telephone controller
• Person who runs a machine or a business
• Controller, of telephone say
• Director or controlller of machinery
• Controller of a machine
• Controller, of a machine say
• Perhaps it's the surgeon that starts with work in the theatre
• Person who's a zero?
• Maybe Carmen tore off the last for a numbers person?
• See 3
• See 6
• Suave sort of popular singer carrying weapon
• Machinist works to rule at first
• Church member finds its head an attractive person