Possible Clues:

• Take one's breath away
• "Maybe" Paul McCartney will do this at show
• "Maybe" Paul McCartney will do this at show?
• Shock
• River's missing on back of guide, causing surprise
• Mother lifted covering off lounge floor
• "You continue to __ me!"
• Hampton Court has one to baffle
• Stagger through a puzzle
• Flabbergast by using a complicated system