Heaven and Hell is the fourth of the five basic works that make up the Spiritist Codification. Its main purpose is to explain God’s Justice from the point of view of the Spiritist Doctrine. It is aimed at demonstrating the immortality of the soul and its situation in the spirit world as a consequence of its own acts. The book is divided into two parts: The first is a comparative analysis of religious theories on life after death. It discusses matter such as the death of children, individuals born with birth defects, collective disasters, and a wide range of problems that only the immortality of the soul and reincarnation can explain satisfactorily. Kardec seeks to clarify themes such as angels, heaven, demons, hell, eternal punishment, purgatory, the fear of death, the mosaic prohibition against evoking the dead, etc. Additionally, it presents the Spiritist counter explanation on the doctrine of eternal punishment. The second part, which is the result of practical work, is a collection of examples concerning the situation of the soul during and after discarnation. These are testimonies given by repentant criminals, hardened spirits, happy, average and suffering spirits, suicides and spirits undergoing earthly expiation