Very stupid and disappointing ending

Rating: 3/10 (9 April 2014)

It starts promisingly. It continues promisingly. The mystery grows. You try to figure out all of the different possibilities - how on earth can this man kill people, while he is all the time lockep up in a prison cell? Does he have a helper? Or many helpers? Who is/are the helper(s)?
When they finally give you the answer, it's so damn stupid that you just feel like your intelligence has been insulted. You feel like you've been ripped off. You feel like "Didn't they come up with anything better than that? Really?"
That ruined the movie 100% for me, because the whole duration of the movie is about rising questions - and the final answers are super dumb.
I was left really unsatisfied. It had good production values and actors, but the ending is just total crap. Avoid.