A necessary (and interesting), but incredibly dissatisfying chapter. The conversation with Sirius was well done, though I could live without the images them both naked. Really, I'm just way too eager to read everything you've got planned.
Well, I'll do my best to not dissappoint :) No comment on the nakedness bit. :D Well, just the fact that in the particular place, you can't take anything but yourself. It might (or might not) be important in the story later on... :D