Billie Bronson returns to New York from Europe to blackmail Johnny Burke (a former flame) with her diary with contains information that the police would love to have in order to put Burke in the slammer. Billie hid the diary in Charlie's luggage and also plans to try to sell the diary to newspaper editor Murdock, while two reporters at Murdock's paper, reporter Speed Patten and photographer Joan Wendell, try to score an exclusive piece with Billie at Burke's nightclub, but after a meeting with Burke and girlfriend Marie Collins, Billie is found murdered in Burke's office. Charlie and Inspector Nelson rush to solve the case (with Lee also trying to work the case much to his father's enjoyment) where they find out that the person who also murdered Billie also stole the diary. Nelson arrests Burke on the circumstantial evidence, but has to turn him free when it doesn't pan out, but Charlie brings all the suspects in to present the murderer. This Chan entry seemed a lot better when thinking about it some time later, maybe one reason why is Huber's character (as well as the actor himself) is annoying as hell. The script plays more like it came from Warner Brothers with the nightclub and gangster motif, but it is good for its genre and film series. The actors playing the suspects are quite good in the portrayals. Rating, 7.