Bauer Books & H. G. Wells 
The Invisible Man [EPUB ebook] 

The Invisible Man of the title is Griffin, a scientist who has devoted himself to research into optics and invents a way to change a body's refractive index to that of air so that it neither absorbs nor reflects light and thus becomes invisible. He successfully carries out this procedure on himself, but fails in his attempt to reverse it. An enthusiast of random and irresponsible violence, Griffin has become an iconic character in horror fiction.