The detective pair, Carl the troubled one and Assad the more positive thinker, reminds me of other famous nordic investigative couples I saw in "Forbridelsen" (Sarah Lundt and her changing buddies) and in "Bron-Broen" (Saga and Martin). The chemistry between them is good and they are likable, even Carl with his nihilism.
I did not read the novel and I don't know if the screenwriter and the director were faithful or not to the written story, but in the movie there are points where I thought "Oh my ... how can it be possible?"
SPOILER: How can Kimmie, a mentally troubled homeless woman that has been living in a dirty cart for years, transform herself in few hours into a club vamp dressed in fashion, with a perfect makeup and a blond wig, with no sign of her chronic psychotic behavior? This is beyond credibility, even considering scenic fiction.
How can Kimmie overpower armed, strong and combat trained men fronting her? This happens four times: when ambushed in the cart, in her friend's house when she escapes Carl, in the detective apartment after the disco and last in the jail. Talk me about SuperHomelessWoman. Even this is beyond the credibility of scenic fiction.
I do not understand why they did not try to make the whole thing more realistic or at last more believable.
The story unfolds between past and present and I found some of the flashback scenes slightly disturbing as they show physical and psychological cruelties.
This is a sad story without a real happy ending, but worth seeing despite its flaws.