Sanctuary (season 2)

Helen was born in the nineteenth century. Despite the fact that she must be over a hundred years old, she looks no older than forty. The researcher managed to develop a serum that gives immortality. She carefully hides the fact of its true origin from most mere mortals. The truth is known only to a narrow circle of people. They have access to secret information about the existence of monsters moving between time spaces. They've taken over the human mind. Ordinary police officers can not cope with cases of this level of complexity, so investigations are engaged in the Magnus team.rn