Related Clues:

• Secret weapon
• Secret advantage
• The turn of a doctor to act, having swallowed steak: a real advantage
• Decisive resource of odd copper breaking up bother
• Time caution's needed, keeping behind to gain advantage
• Blast eccentric winner at the table?
• Useful expedient to find seat in time carriage departs
• Decisive advantage, one blown by eccentric
• A bridge club with a high status maybe
• Key resource to be used at the right moment
• Initially trailing behind, character makes winning move
• Advantage, from the game of bridge
• *Source of a decisive advantage