My personal receommendations are:
Mari Jungstedt - Inspector Knutas, (you can imagine what I call him! Good characters but I do find journalist and his love interest quite tedious at times)
Ann Holt - the Vik/Stubo series is very good (but Johanne Vik is a complete wet blanket and this never changes, however the other characters and the stories make up for this).
Jussi Adler-Olsen - Mercy is very good.
Camilla Läckberg’s Fjällbacka series (really lovely descriptions and good characters).
Jar City - Just read and enjoyed this.
My absolute favourite is Håkan Nesser's Van Veeteren series, they are (in my opinion) very well writtent and Van Veeteren is a great character.
http://www.scandinavi...ction.com/Authors.htm <<< Should get you going, really helpful site.
As you can tell, I'm a big fan of nordic noir! :c)