I've been reading Dracula by Bram Stoker. It actually holds up quite well, though the prose is a bit dated. It's actually like a found footage story in some ways, since the whole thing is presented through letters, journals, etc. There's one chapter that's very similar to the movie Alien where Dracula is on a ship and picking off the crew one by one.

I've also just read the first few chapters of Red Cavalry by Isaac Babel. It's a book about the Russian Civil War. Extremely brutal and unfiltered, kind of like the book version of Come and See. One of the first chapter is how a White officer captures his son and discovers he's a Red, so he hacks him to death with a sword. His other son then comes for revenge. All this is narrated as a letter from the third son to their mother.