This series is a very good watch if you like detective/crime/murder dramas. It would be quite a mediocre series if it weren't for the brilliant character of Detective Goran, who seems to have some kind of background in psychological profiling and uses it to good effect. Being also a bit socially quirky, it is great fun to watch Goran and Eames pin their suspects into a corner and get them to confess using all sorts of psychological games. It reminds me quite a lot of the old Columbo series where half the entertainment comes from watching the detective play cat and mouse with their suspects.
The only issue with it is, if you are the sort of person who like the mystery of 'whodunnit', you may be a little disappointed as they often show who does it to start off with and the story is more about how the detectives catch them.