ridiculous, but----(spoilers)

The plot was utterly ludicrous, starting with a professional woman signing a "contract" (which was actually committment papers) without even reading it. Her gullibility from the get-go was extremely annoying---and the ending, where she is considering staying on at the facility after all that has happened looked like the actress could hardly believe it herself.
In spite of all this, I have to admit that the movie was suspenseful and made me care what happened to Celeste. I actually enjoyed most of the acting, especially by the poetry lady.