The film follows a beautiful widowed psychologist living with her bedridden son who gets a terrible accident in isolated place. One day, a young boy is lost in the deadly storm which makes she must find track down him before it is too late.
Watts gives her all to this overheated nonsense, but is powerless to make emotional sense of what turns out to be the story's twisted central relationship, and ends up being just another fiercely maternal damsel in distress.
Shut In feels unfinished and scrappy. If you want to watch Watts wriggling around naked and bound in a bathtub, it may entertain you for five minutes, but the only thing that's scary about it is the waste of talent.