I watched Devil and got the gist of the story. But am confused about the old woman (Satan?) who was in the lift. Is she really the Satan or just the haunting past memory of the other characters in the lift?
And also who killed who exactly? (During the flash-back of the car accident)
It is a simple as the Old Woman is the devil.
As far as who killed who:
In a last, desperate plea for forgiveness, Tony, using a radio, confesses to a hit and run five years earlier: while drunkenly reaching for beer in his car, he smashed into another car and killed a woman (unknown to Tony that the woman was Jesse Bowden, Detective Bowden's wife) and her child.
Tony killed the Detective's wife and child.
