 Sylvia West is a young poetess engaged to Frederic Summers, an eccentric millionaire. Summers, a man who always fears he is being loved for his money, decides to make a small check on his prospective bride. The results of this check completely shock him. Not one fact matches  his  Sylvia. Intregued and bewildered, Summers hires detective Alan Maklin and has him make a thorough investigation on  Who Is Sylvia. 