A wealthy shipping magnate is murdered just after a fire destroyed one of his luxury liners with a fortune in Chinese bonds aboard. His daughter's fiancé is the chief suspect, but feisty reporter Bobbie Logan (Marjorie Reynolds) isn't convinced, so she enlists the aid of Mr. Wong (Boris Karloff, in his final series appearance) to catch the real killer. Grant Withers, William Stelling, Melvin Lang also star. AKA: "Mystery of the Wentworth Castle." 68 min. Standard; Soundtrack: English.