In the clinical practice, as well as in the scientific literature, there is a vast repertory of diagnostic errors, especially when migrant patients express symptomatology related to spirits, djinns and ali "the night's beings" and/or they say (or who are said) possessed, inhabited, or visited by the invisible world. The purpose of this study is to analyze, explain and prevent the high incidence of acute psychiatrie disorders, mainly psychotic, among migrants. We collected and analyzed the speeches of patients, clinicians, patients and their families and we reproduced a photogram of psycho-medical follow-up. We hypothesized that the spirits's illness would be for the patient the expression of suffering, as well as the pivot of the healing process that passes through a quest for meaning, a negotiation between the present and the past, the individual and the group, the origin country and the new world, the ordinary and the extraordinary, and between all the beings, and the persans who are part of. We have corne to the conclusion that spirits often have a "restorative" function in the psyche of the patients analyzed. The appearance, or possession by the invisible, can also be a source of desire satisfaction and narcissistic healing in the patient's experience, although it is a terrifying experience. This work highlights the need to build the framework and the therapeutic relationship, from the way the patient tells his story.