I am afraid I shall be doing you a terrible disservice with this comment because I got no sleep staying up until 2 to finish reading it!! :D But I have rec'd it on my journal. I hope that is a small comfort for the lack of coherent reply.
This is possibly my favorite fic so far, certainly in the top five. Just stunning-told beautifully by dear Dr. Watson. Harry is wonderful-very much the man he ought to be in fic more often. I adored Draco. And Severus is seriously just brilliant. There were so many little lines you used from canon (the bravest man one for example). The banter between both Harry and Draco and Harry and Severus was spot on. The plot itself was wonderful with so many twists and turns-the trip to Malfoy manner (that Draco knew he must have done it!), several rescues and narrow escapes, the dastardly Moriarty and how they solved the problem with Holmes and Watson in the end, by hiding them. Oh, just everything about this was amazing. I can't wait to have a chance to re-read it. Exquisite work.