An interesting concept: The junkie/criminal mother of a detective's son returns to town after many years abroad and inserts herself into their lives as the detective's new informant!
I can't say that I've seen too many Finnish detective stories, but I am watching a bunch of Nordic detective shows lately, and this one works fairly well next to the rest.
However, as the story progresses along, you start to realize that enormously stupid decisions that detective Oskari makes. His junkie ex-girlfriend/informant is a criminal with a host of mental issues, so you can't blame her for the stupid things she does. But, Oskari should know better and continues to do really stupid things! Things that might move the story forward, sure, but things that should reflect poorly on him as a human being!
First, he's using his ex, Krista, as an illegal informant that puts her, the MOTHER of his son, in terribly illegal situations AND life threatening situations. He's now having to lie to his boss and coworkers (illegal) and to his son and new current girlfriend (terrible human behavior).
As the story progresses, he pushes Krista deeper into danger. Granted, she goes willingly, like a junkie trying to win back her son.
Oskari never listens to anyone, let alone his son, Nikko. He forces "wrestling" moves on him to show affection instead of hugging, etc. He lies constantly to him and every time Nikko tries to explain something, Oskari cuts him off and/or runs out the door for work.
Because of his lying at work, the newer, younger detective suspects him and starts looking into things (albeit way too late). Also, for as blatant as Oskari and Krista are (and I DO mean REALLY blatant), neither the cops nor the crooks seem to notice!
So, a really odd show. On one hand, it's competently assembled (although the editing is a bit too goofy at times). The direction and acting is mostly pretty good (definitely not great! The guy playing Oskari is uninspired to say the least) as is direction. The script is the weird culprit: Again, having Oskari treat people around him shoddily, especially Krista. Not a bad show, just overlook the gaping holes.