books featuring obsession, from the light-hearted and quirky to the dark and twisted

A collection of Swedish classics that have been translated to English, including some more modern classics. First I added classics I'm familiar with myself and then I went down a rabbit hole looking at a couple of lists online and the recently established cultural canon of Sweden. I've made an effort to add diversity where I can but as you can imagine it's quite lacking, especially in works that have been translated to English. I've also excluded poetry for now as that's not my thing.