Possible Clues:

• Expose the true character (of someone)
• Expose enemy that's hidden regularly while in Britain
• Expose, at a costume party
• Reveal odd characters in name while in Britain
• See through a disguise
• Discover the identity of
• Peacemakers question male first to establish identity
• Bare man swimming in river
• Expose corrupt man in American bank, finally
• Expose, strip away concealment