No pun intended - locked inside with someone a babysitter tries to protect from someone ... well we don't know who that would be. We do learn it and it almost feels like a joke when you get to see who or what it is. Let's say I was quite unimpressed. Many logical issues and/or flaws I reckon. I really was not that ... well impressed by the whole thing.
Even more so considering the end of the story/movie. Which seemed to be the point of the whole story - leading us to the end, that you either love or hate I suppose. Technically speaking the movie is very well made. The acting is decent too overall - it just will boil down to, if you'll be able to suspend your disbelief ... which I think is quite hard to do in this case ... but that might just be me.
Even more so considering the end of the story/movie. Which seemed to be the point of the whole story - leading us to the end, that you either love or hate I suppose. Technically speaking the movie is very well made. The acting is decent too overall - it just will boil down to, if you'll be able to suspend your disbelief ... which I think is quite hard to do in this case ... but that might just be me.