Desc: The Black Book: Directed by Spencer Gordon Bennet, Thomas Storey. With Allene Ray, Walter Miller, Frank Lackteen, Paul Panzer. Chapter 1 - Secret of the Vault Dora Blake (Allene Ray), posing as an art student, but secretly affiliated with the police, is watching enemies of her uncle, Tony LeBec (John Webb Dillon). She is loved by Ted Bradley (Walter Miller), a wealthy waster. When he is reduced to his last fifty dollars, he buys an interest in a taxicab driven by Tin Lung (Willie Fung). Sally Davis (Marie Mosquini), supposedly a model, but really a spy for Dora's enemies frames Dora with the story that a certain "Black Book", which is of value to Dora's uncle, lies in the Imperial vaults. Dora goes in search of it and Bradley, who has vainly sought to dissuade her, arrives just as police officer Sullivan, who has escorted Dora, is murdered. As Bradley, held by two crooks, watches, a hood is thrown over Dora's face and she is drawn out of sight by a great hand. To Be Continued- See Capter 2 - The Death Race.