I am VERY confused!
Forgive me if this is stupid! Ok...the last scene,Taylor breaks the window at Helena's place at the Institute. You can CLEARLY see Helena, in bed, startled, and immediately gets out of bed and runs out of her room.
She goes down the same stairwell (that goes around the elevator) that Berlin went up several days earlier (, when he and his partner Ross were checking out the Institute on Christmas eve.) Once again, you can clearly see it's Helena (Uma).
And then Taylor catches up to Helena in a hallway and says something like,"say goodbye, bitch" or something like that, and then Helena turns around, only it's NOT Helena, it's Margie Ross, the now-deceased Sgt Ross's wife!!
I've tried, repeatedly, watching that last scene, to see where Helena would bow out and Margie (disguised as Helena) started running, to fool the killer...I can't see it. Where does she enter the scene? Don't tell me the beginning, cos the woman in bed is CLEARLY Helena!!
I love this movie, but this inconsistency has been bothering me for over 10 years, and would love to have someone clear this up for me (preferably without telling me "how stupid" I am or something like that, ok?)