About This Book
A young inventor builds an apparatus to transmit moving images and sound, conducting late-night experiments with his friend as a performer; early trials yield faint, shadowy pictures but audible sound. When the friend disappears, the inventor follows a mysterious trail that leads to chases, captivity, and an island refuge, revealing a plot by criminals who covet the new imaging technology. Through investigation, daring rescues, confrontations with masked assailants, and a final test of the mechanism, the inventor thwarts the thieves and secures the invention, opening the way for its successful demonstration and a promising future.
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