A while back I picked up All the Colors of Darkness, by Lloyd Biggle Jr., and I finished it in one sitting. It's either fast-paced, or I couldn't put it down, I'm not sure. Regardless, it's an interesting mystery set in the 1980's (it was written in the '60s, so it's spec-fic) that has a nice ending. It's not terribly memorable, but should you see it floating around in a library I do recommend picking it up.
Also, I had picked up Revelation Space at about the same time. This one took me a couple of weeks to get through, despite only being about two and a half times the length of the mystery novel. It's "hard" sci-fi, but it just seemed interminable. This is understandable though, since it's the foundation to a trilogy, several novellas, and a few short stories. For what I bought it for, a great price. Over the thirty-three cents I paid, I wouldn't seek it out.
And with that, I'm off to dinner. Goodnight everyone, and stay safe out there.