Looks like it's Book of the New Sun Volume 1 : Shadow and Claw.
So Shadow of the Torturer and Claw of the Conciliator
that would be nice ... I had not looked closely at the cover in the main post and it looked close enough to the full set of of 4 volume so that is what I thought it was. I am not sure if I will get through all 4 books this month, even though 1000 pages is usually about what I read in a week. This is slower going for me, its not one that I can easily read when there are going to be interruptions from my kids, which is most of their waking hours, which are entirely too close to my waking hours these days. Because of this, I have also been reading some lighter books at the same time.
I did finish Shadow of the Torturer, but have not started the Claw of the Concilator yet.