Can't believe Henning Mankel not mentioned yet.
In UK we had a TV series based on the marvellous Wallander detective novels, which our family thought was pretty good, with Kenneth Brannagh - but then we got the original Swedish series, and have had 3 series so far, with subtitles, and they are BRILLIANT, miles better. Much truer to the books than the Brannagh one- the star actor, as happens sometimes, seemed more central than the story, somehow.
Anyway, that led to me reading the books, and they are even better - terrific writing, and I found them genuinely unputdownable.

They aren't "quick" reads, rather..... totally absorbing, I suppose.
I presume they are in ebook here, and they must be in Sweden.
(I had the real books before my PRS650 Christmas present arrived !)