These three novels have been collecting dust on my shelf for some time now. I think Blood Winter released back in 2012. I love all three of these series, so I'm not quite sure why I didn't finish them. I think what happens is that I'm not in a rush to read them because I know there isn't another installment to look forward to once I'm done. So then I set them aside, intending to come back to them later, and then review books get in the way and I find new series to follow and then I just forget.
Are there any final installments that you still haven't read?