The Power of Fear (movie, 2006)

Ivan, a cynical journalist, is assigned to investigate mysterious events in a small town. During his first night, he is seduced by a strange and mysterious girl. As they embrace, she transforms into a hideous demon. Ivan fights the creature, managing to strangle it. But it is too late, Evil has been unleashed. When Ivan is charged for the brutal murder, he feels his last hope disappear. As he is overcome by the dark forces trying to pose as his soul, Ivan comes to realize that his only hope lies in his power to find the faith that he once lost