Poor, unimaginative and illogical script. Protagonists continuously made unrealistically silly decisions and everything always end up with the worst possible result. I know we have to suspend disbelief to enjoy works of fiction but come on...there still needs to be a semblance in reality of how folks make decisions and odds play out. Sequence of events were so far fetched that it was obvious the writer/s were simply trying to keep story going to fill an average movie run time. The mere fact that victim, a younger and fitter female can not overcome the villain, an old and frail lady, sums up the irrationality of this film.
