Obviously I tore through this one, and recommend it highly for horror fans who can deal with a little claustrophobia. I liked the dedication to ambiguity as well; the author never felt the need to provide a definitive answer to what was going on, and thus everything was made more horrific. Characters have theories on why things are happening, but they'll never know for sure. The SF premise only heightens this. I loved it.

I'd really rather give it 4.5 than 4, but GR will do what it does. The ending... Mmm. I felt the ending was just a little too clean after the dark murkiness of the rest of the book.

I think I just might not like happy endings for books that spend so much time on horror and terror and violence. That might just be a me problem. I can understand wanting comfort after a book like this. I just don't want it for myself.