In San Francisco, Simon Dayton, the senior partner in a chemical company, visits famed detective James Lee Wong as Dayton fears for his life stemming from a series of unexplained events in both his personal and professional life. But before Wong can meet Dayton at his office the next morning to follow up, Dayton is found dead in his locked office, the cause eventually discovered to be by poison. Captain Sam Street with the SFPD leads the investigation. The primary suspect is Carl Roemer, the scientist who developed the poison which he accused Dayton of stealing from him as he was never paid for the formula. One of the initial questions is how Dayton was poisoned behind the locked doors of his office. While Street takes the path of least resistance in the investigation in believing Roemer the obvious killer based solely on circumstantial evidence, more thoughtful Wong takes a broader approach in trying not only to discover other suspects, but how whoever the killer was able to administer the poison. Two of those other primary suspects are Dayton's partners, Theodore Meisle and Christian Wilk, who stand to profit substantially from Dayton's death, in addition to Dayton, Meisle and Wilk's many employees and associates. Adding to the investigation is Street's sometime girlfriend, Myra Ross, who nonetheless respects Wong's take on the investigation more than Street's in looking out for the proverbial little guy. Written by Huggo

Shipping magnate Cyrus Wentworth, downcast over a disaster to his ocean liner 'Wentworth Castle' (carrying, oddly enough, an illicit shipment of Chinese bonds) is shot in his office...at the very moment of kicking out his daughter's fiance Dick Fleming. Of course, Captain Street arrests Dick, but reporter Bobbie Logan, the attractive thorn in Street's side, is so convinced he's wrong that she enlists the help of detective James Lee Wong to find the real killer. Written by Rod Crawford

The Eye of the Daughter of the Moon, a golf ball sized sapphire has been stolen in China and smuggled into the US. Edwards, a rich man who knows a curse was placed on the Eye by the Emperor Hong Chong Tu as he buried it in his dead unfaithful wife's heart, expects to be murdered for receiving it. He shows Mr Wong the Eye and a death threat note. At a party, during a game of Indications, Edwards is shot, seemingly by his secretary, Peter Harrison. Add a peeking Chinese butler and maid, a budding singer, another criminologist, Edwards' lawyer and an unsigned changed will. Mr Wong helps Street sort out the details to uncover all the secrets and the murderer. Written by John P Roberts, Jr

When his friend Professor Kingsley is at deaths door, brain surgeon Dr. Sovac saves his life by means of an illegal operation that transplants part of injured gangster Red Cannons brain. Unfortunately, the operation has a disastrous Jeckll and Hyde side effect and under certain conditions the persona of Cannon emerges. Sovac soon learns of the duel personality and of half a million dollars the gangster has hidden away. He attempts to find the money through the manipulation of his friend, an attempt that brings Kingsley closer to madness as he alternates between a meek professor of English and a brutal gangster out for murderous revenge on those who tried to kill him. Written by Carlos Valverde

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داستان فیلم درباره کارآگاه معروف شرلوک هولمز و همکارش دکتر واتسون است. آنها به واشنگتن دی سی سفر می کنند تا از افتادن یک سند محرمانه به دست دشمن جلوگیری کننند.

Charlie discovers a scheme for the theft of government radar plans while investigating several murders.

A scientist becomes murderous after discovering, and being exposed to the radiation of, a powerful new element called Radium X.

داستان فیلم درباره کارآگاه معروف شرلوک هولمز و همکارش دکتر واتسون است. در خلال جنگ جهانی دوم، یک سری قتل در آسایشگاهی که دکتر واتسون داوطلبانه در آن خدمت میکند رخ می دهد. او هولمز را به کمک فرا می خواند و کارآگاه معروف شروع به حل معمای قتل ها می کند.

Prophecy has it that younger twin Anton will kill brother Gregor in the castle's Black Room. Anton returns to the castle after a 10 year hiatus. Gregor, a Baron, has many attempts on his life as his subjects detest his tyranny. However, good natured Anton earns the subjects' respect, and the admiration of Col.Hassel, uncle of the beautiful Thea. When Gregor kills young servant Mashka, his subjects storm the castle to remove him. Devious Gregor renounces his title in favour of brother Anton to appease them. He then kills Anton to assume his identity and the Baronship again. He is free to pursue Thea with Col.Hassel's blessing. When Col.Hassel discovers Gregor's impersonation, he also meets death. With Thea's true love, Lt. Lussan, wrongfully convicted of Hassel's murder, it appears nothing can stop evil Gregor from ambushing her into marriage. But what of that prophecy? Written by Gary Jackson