Danny Blake gains the power of invisibility from a chemical spill in Professor Williard Crown's laboratory when "Scars" Mason tries to steal the formula for changing other metals into gold. Invisible Boy captures "Scars" Mason.; Invisible Boy foils "Comrade's" plan to ruin Grand City by sabotaging its newspaper and radio station.; Invisible Boy shows up Percy after he steals a date with Margie.; Invisible Boy captures a gang of counterfeiters, who are using a haunted house as their base of operations.; Five single-panel strange occurrences.; Accidental discoveries of radioactivity, aspirin, vulcanized rubber, the telephone, white paper and wood-pulp paper.; Strange tale of Lincoln's inauguration.