I watched this simply because of the cast, and was disappointed. I know Jodie Foster is a superb actress, and I thought that she would have been much better cast as one of the criminals, instead of the Nurse. Overall, it was mildly entertaining but I'm glad I didn't go to see it in a movie theater.
I think the characters could have been better developed, and the opportunity was there to really do something big with this storyline, but failed.
I would love to see a similar storyline with a better overall plot and more thoroughly developed characters. The entire premise of the story is fantastic, but the outcome truly fell short of what I expected to see, having those caliber of actors and actresses in it.
To sum: It was the B-side of a B-movie!! Lol