horror opening title sequence #2

This opening scene will be to a Horror movie 

The movie opens with a family having dinner at the dinner table when the father begins acting out of the ordinary in small ways. as they're eating dinner his son beings to notice that there is something out of the ordinary happening and leaves the dinner table. as he leaves the table he makes eye-contact with his "Father" and grabs his phone as he leaves. his father stares blankly at the doorway that the son left through. the mother then cals to the father to bing him out of his delirious state to which he responds by getting up from the table in the dinging room and following the sons path. as the father passes a mirror in the hallway there is no reflection seen. when he gets to the sons bedroom he sees a telephone wire coming from inside the wardrobe,  his son is hiding in a wardrobe calling 911. the father then aggressively opens the cupboard door to reveal the son, the last shot is of the phone dropping on the floor as 911 operator asks "911 what is your emergency...hello?".

the rest of the movie will follow the narrative of the being masquerading as this families father as he secretly begins wreaking havoc on the neighbourhood. they follow the story of each member of the family finding out and eventually one of them figuring out what he is and trying to find their actual father.