This book summarises in brief the original work of Sri Aurobindo “The Problem of Rebirth”. Meaning of rebirth, metempsychosis, transmigration is discussed. Reincarnating soul, evolution of soul and heredity are explained. Ascending scale of unity, involution and evolution are discussed in brief. Then, what is work – that is, Karma, karma and freedom of the soul, will in man and its consequences are discussed. How rebirth and karma are related is explained. Most perplexing question of karma and justice, higher laws of Karma, terrestrial law of Karma and tangle of Karma are explained.