Related Clues:

• Diner vehemently grasps bottle
• Forward attitude
• Bravery or courage
• Bungee jumper's requirement
• __-racking: very stressful
• Bottle -- optic possibly applied to it?
• Courage of owner finally entering flat that's been turned over
• Impassivity
• Cheek never turned
• Strength of character is never wrong
• One sending brainy message in bottle?
• Never breaking neck
• Calmness of posh little gym, all empty
• Cool Belgian briefly spoken?
• Courage or gall