The Dark Forest by Cixin Liu

[unspeakablehorror]

I really enjoyed this novel.  I absolutely sped through it.  It's also a really scary story because even if one ignores the terrifying weird sci-fi stuff (and I certainly don't!) there's still the terrifying but utterly ordinary human stuff and the story is built up in such a way that I find it all too easy to see how the characters could be motivated to do some of the utterly frightening things they do in this series.  The evil done in the story isn't the evil of supervillians, but the very real and ordinary evils committed by frightened and desperate people.  That's true even of the very strange space aliens in the story, really.