What happens to the soul after death? Various religious, philosophical and scientific teachings give very different answers to this question. In this work, Swami Sivananda, one of the greatest spiritual authorities of the 20th century, analyzes almost all existing views on life and death, reincarnation and non-physical planes of existence - naturally, most attention focusing on the views of his own religion - Vedantic Hinduism - and gives a comprehensive answer to the question posed in the title of the book. The reader is waiting for a fascinating story about the journey of the soul through the world-lokas of the Hindu Universe, about people who remember their previous lives, about the meaning of post-mortem religious rituals, about spiritualism and karma and much more that is connected with the greatest secret of human existence. Like all books by Sivananda , this is by no means an easy read. A serious reader will work through this book more than once with a pencil in hand, turning along the way to the sources and traditions to which the author refers. But, as with all Sivananda's books, the effort spent reading and understanding the text will pay off handsomely.