Possible Clues:

• Reveal one's true identity
• Take off disguise to expose true nature
• Reveal international body's beginning to make demand
• Spade held up by attractive man who won't begin to show his face
• Expose, remove disguise
• Expose a French medium with 25
• Reveal (the true nature of)
• Expose man swimming in Welsh river
• Expose the true character of (a person)
• Disclose (the hidden nature of)