James Manlove, a retired naval engineer, with the aid of his daughter Marjorie, perfects his discovery of the powerful violet ray for the use of the United States government. With the announcement of his success, his laboratory is invaded by agents of a rival government, who bind the inventor and blind him with his own machine when he refuses the information they seek. Marjorie, escaping, faints in the arms of Grant, police reporter on the Chronicle, who is homeward bound through the park. Calling a taxi, Grant places the girl in it and has her left in care of his landlady while he goes to summon a doctor. Dimitri sees Grant help the girl and returns for Orloff. They capture Marjorie and take her back to the laboratory. Marjorie's plight is seen by Grant who is just returning with the doctor. Following them Grant reaches Manlove's home but his entrance is barred. Climbing a telephone pole on the other side of the yard, Grant walks across the wires until he can swing into a third story... Written by
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Episode 15 of 29 of the series "Grant, Police Reporter." See more