Really good watch, could watch again, and can recommend.
Halle Berry carries this great Pyschological Thriller of a doctor turned mental patient. This definitely has the production value to support its needs.
They do a great job of calling into question whether or not she's crazy at any given time while still presenting the "other worldly" aspects consistently.
I even think it holds up (currently) 18 years later as there are technological restrictions in place.
Well worth the watch if you like slasher killer detective movies.