Amazon.com description: Product Description: The Invisible Man of the title is Griffin, a scientist who theorises that if a person's refractive index is changed to exactly that of air and his body does not absorb or reflect light, then he will be invisible. He successfully carries out this procedure on himself, but cannot become visible again, becoming mentally unstable as a result. This masterpiece of science fiction is the fascinating story of Griffin, a scientist who creates a serum to render himself invisible, and his descent into madness that follows.