Gerard Dennis (David Brian) is a suave, controlling character. He supports himself by filching jewels in ingenious ways from their owners, often women whom he inveigles into his clutches by seducing them. Although he primarily relies on conniving and trickery, he is not above also resorting to violence when necessary to enable him to escape apprehension by the law.
He pulls off a series of amazingly clever seductions, heists and escapes from the police. However, one of his conquests, whom he had married, helps the police catch him. He is sentenced to prison for some 25 years, when he will be 55 years old.
