Last decade has seen dozens of really magnificent and novel creations in the field of crime thrillers, without a single case per episode, but a recurrent case/topic with multiple twists and turns. 100 Code is another fine example of them, well, not up to Bron/Broen or Millennium, but still a thrilling series to follow. The inclusion of an American, wideness of the case and the parallel or subsequent use of both English and Swedish (most Swedes are very good at English) move the events beyond "provincial" mood and environment characteristic to Scandinavian crime from time to time. Nevertheless, the viewers obtain a decent overview of Swedish habits, concepts and nature, plus how all this is perceived by a foreign official.
As for performances, I am surprised that some viewers have found them poor; I find them realistic, as catching offenders is neither constant chases in fancy cars and clothing nor issuing witty remarks at each other, it is a hard and crushing job at the expense of family and friends. In my opinion, all the cast is doing well, yet Michael Nyqvist as Mikael Eklund and Dominic Monaghan as Tommy Conley spend more time on screen.
All in all, a good series, and the very ending was pleasantly tricky. If you like intensive series where crimes are dealt with in a team, then the one in question is definitely for you as well.