The Book of Takis Eudokas is a study of the phenomenon of "death" from the point of view of modern science about the structure of consciousness and the physiology of the brain. The author cites both arguments confirming the fact of the possibility of out-of-body existence, and arguments of skeptical scientists explaining near-death experiences by unregistered brain activity. What happens at the last moment before death? What does a person experience after that? Is there really a "different world"? What does he look like? Much has been written about "paradise" experiences: the great power of light and colors of inexpressible beauty. Is there evidence of those who have been to hell?