The ending of Kafka's The Castle: 

She held out her trembling hand to K. and had him sit down beside her, she spoke with great difficulty, it was difficult to understand her, but what she said

That's just one of twelve books in this Publisher's Weekly blog post about novels that end in the middle of a sentence. The reasons for each abrupt ending are given, but Kafka has the best excuse--he died. 

The books are the nine above and these three below:

Link

This is very seriously not safe for work, and if you are easily offended by dirty talk, you need to keep on scrolling and save yourself the aggravation. Although I think it's funny that the article was like, "Wow, the dude who wrote Ulysses was a dirty bird?" I never finished Ulysses, but I've read enough to know that Joyce was a dirty bird, even in Ulysses. There was an obscenity trial and everything. I do like people reading out incongruous things on the Internets though.