As befits a typical Polish film, it's dull in dialogue, a shallow-as-a-paddling plot, and, as always, there's some cute lost character.
It reminds me of The Witcher, the old one. Suddenly, some facts emerge. Someone who was bad is suddenly good. The good guys suddenly turn out to be evil. Supporting characters suddenly die, no one knows anything, but the hero knows everything :)
The main character constantly talks to himself as if he has a split personality, because I understand talking to a dog. Oh, and speaking of dogs - there's nothing like taking him on a reconnaissance mission - the dog barks at a crucial moment :D The dog also finds the evidence needed for the case, of course.
The script was written by a mentally challenged 14-year-old. And of course, as in an American film, everything is laid out on a silver platter - every fact has to be stated because the viewer is an idiot :)
The music, the fight scenes, and the dog assistant are pluses. It's watchable, but don't expect an unforgettable experience.