When I'm in the library looking for something to read that isn't knitting or sewing related, I find browsing the Librarian's Choice shelf is often quite successful.
The most recent good find is a book of short stories called Fortune Smiles, by Adam Johnson. The author apparently won a Pulitzer Prize of an earlier novel (The Orphan Master's Son).
It's just great. The stories are sad but not poignant. There were no chuckles whatsoever to relieve the tragedy. But the people in them haunted me and made me realise how much I just don't know about people.
Like, there's one about a former warden of an East German political prison who can't accept that anything really bad ever happened in there (and anyway they deserved it). And the one about the survivor of child sex abuse who struggles to do something positive with his life. Serious themes, but don't run away from them - it's worth it.