The Evil Doctrine (TV series)

Some weird things have been happening to Alena Sklyarenko, a psychoanalyst and mother of three: someone's ringing her doorbell, the man in black is watching her family, she finds a satanic sign near her door and there's a ghost haunting her client - At the same time, the life of Detective Oleh Kolesnik starts collapsing: unexplained events, unfaithfulness, betrayals, deaths of his friends. Alena and Oleh now have to find who or what is hunting them, and they have to stop it before it destroys them. - IMDb