Not a happy ending, just the opposite, a total desaster: the Larsen family is destroyed, Hartmann is reduced to being a puppet, Meyer is dead and Lund would have gone to prison, if she hadn't accept the deal.
This is stuff is much too dark/complicated for US TV: Is Brix a good or a bad guy?
At least he's calling back Lund (who will stay with the police but has to work somewhere in the country, far away from Copenhagen) as an adviser to solve some murders involving the military: The second series is just as good as the first one.
The NYT had a story today about the US version:
"The American version hews very closely to the original, with the same three-strand plot and with characters modeled on the Danish ones, said Joel Stillerman, AMC’s senior vice president for original programming, production and digital content.
“We tried to embrace a lot of what we thought made it incredible, including the Nordic sensibility, the stoicism of Sarah Lund and the lack of that overtly frenetic behavior that you’re constantly seeing on American crime and police shows,” Mr. Stillerman said. “Instead of having a chase scene with a standard bunch of cop cars with their lights flashing, we have things that you’d be much more likely to see in a horror movie — a scary walk down a dark hallway with the right piece of music.”"
A Series With Little Action and No Sex