This book offers important explanations about life in the spirit world and the communication between spirits and human beings, especially during the sleep of the physical body. The spirit author explains the causes of mental disturbances, presenting their respective treatments. It also analyses the Spiritist view on abortion, epilepsy, schizophrenia and Down syndrome, among other themes. Andre Luiz highlights the immediate rescue by invisible workers of those who need help. These spirits help to prevent – as far as possible – madness, suicide and mental disasters.