Reveals as a fraud, say

• Exposes, as a villain's secret identity
• Reveals by removing a disguise from
• Foils, perhaps, as a villain
• Reveals peacekeepers beginning to make requests
• Exposes, in a way
• Removes a disguise from
• Reveals the identity of

Wiktionary Word definitions in Wiktionary
vb. (en-third-person singular of: unmask )