Acted well, the plot was very weak
1) The pace of the film is terrible, next to nothing happens for 1,5 hours of playtime.
2) The plot is very weak, consequent Diploma killings are not explained, nor his character, motives and behavior.
3) Why couldn't detective and his wife have another child? Was he so sorrow he stopped making love to his wife?
4) There are too many loose ends and too many things are left unexplained and unanswered.
3/10