Maledicto

Xavier "Xavi" Lavezares was supposed to be a brilliant psychiatrist with a bright future ahead of him, until his sister Mara killed herself in front of him in the throes of a supposed demonic possession. Trying to find answers in a vocation he thought he'd never take up, Xavi becomes a man of the cloth who spends his spare time taking apart cases for exorcism.

Source: IMDB