WOW! I love how completely cold and calculating Lucius is... and, of course, I like seeing the motherly side of Narcissa. Excellent characterization! Wow, though. Such suspense. It's a dark look into a possible... ...whoah. Draco Lupin? Whoa. Just. Whoa.
The only problems I noticed were that first you have him close the book, and then you say that he had her read it. Plus, you spelled "aloud" as "allowed." Other than that though, this is AMAZING. Good job!