Hammond Cross sees a beautiful woman across a crowded dance floor and knows he has to be with her. After they spend the night together, she mysteriously disappears. Later, while prosecuting the biggest murder case of his career, Hammond discovers that Dr. Alex Ladd, the prime suspect, is also his mystery woman. Now, he faces a moral dilemma and a haunting question. Is she innocent of the crime or was he used as her perfect alibi? And if she isn't the killer, is she the next victim?