Hong Kong Confidential

Agent Casey Reed is tasked to find a missing prince (played by an un-credited Michael Barry) of the small Arab nation Thamen who was kidnapped by Communists who want him to not sign an agreement to let the United State build a missile base there. He masquerades as a singer in a nightclub, but he is captured by the Communists, who plan to kill the two of them in order to blame the kidnapping on the Americans.