Build a movie plot around this: Who was possessed by a demon? Anna.
Answer:
A security guard is running through a subway station, he eventually enters a room he cannot escape from and starts begging his reflection in a mirror for his life. Suddenly, his reflection cuts its throat with a mirror shard, killing the "real" security guard.Ben Carson (Kiefer Sutherland), a suspended police detective, begins his first day as a night security guard at the Mayflower, a luxury department store that was gutted by a fire and shuttered five years prior. The building still contains numerous mirrors from the store.On Ben's first night of patrol he finds a mirror that appears to be covered with handprints, but only on the reflected side of the glass. He sees an open door in the reflection while it is actually closed. Over time, Ben begins to see more intense visions, which he initially shrugs off as hallucinations. He soon finds the wallet of Gary Lewis, the previous night guard (who died at the beginning of the film). Inside is a note that says "Esseker". After viewing Gary's crime photos Ben is convinced that the mirrors make people do things to themselves that they are not actually doing.Meanwhile, Ben's sister, Angie (Amy Smart) is killed by her reflection as it grips its jaw and slowly pull its mouth apart, causing her to bleed profusely. Ben is distraught when he finds her body. In anger, he attempts to destroy the mirrors at the Mayflower, but they are impervious to damage. He demands to know what the mirrors want, and cracks appear on one of the mirrors, spelling out the word "ESSEKER".Ben enters the flooded basement of the Mayflower and finds a small sign stating "Psychiatric Studies" and "St. Matthew's Hospital" underneath. He moves to the site of the leak and begins pulling at the tiles and brick of the wall and finds a room with a chair surrounded by mirrors beyond it, a Psychomanteum. Realizing that the Mayflower was built on the site of an earlier hospital, Ben asks his police friend Larry (Jason Flemyng) to help him locate the patient-employee manifest for the hospital. Larry...