TV series Legion (2017) - season 1

David Haller has been suffering from a psychological disorder since a young age, haunted by eerie visions and hearing voices. His relatives place him in a psychiatric clinic, where the guy is convinced that his problem is simple schizophrenia, which can, if not be cured, then at least be kept under control. However, in fact, David is under the supervision of a special government organization that suspects that Haller is a powerful mutant who is not yet aware of his powers.