'He"s a political conspirator, there"s not a doubt about it,' Razumihin decided, as he slowly descended the stairs. 'And he"s drawn his sister in; that"s quite, quite in keeping with Avdotya Romanovna"s character. There are interviews between them!… She hinted at it too… So many of her words…. and hints… bear that meaning! And how else can all this tangle be explained? Hm! And I was almost thinking… Good heavens, what I thought! Yes, I took leave of my senses and I wronged him! It was his doing, under the lamp in the corridor that day. Pfoo! What a crude, nasty, vile idea on my part! Nikolay is a brick, for confessing…. And how clear it all is now! His illness then, all his strange actions… before this, in the university, how morose he used to be, how gloomy…. But what"s the meaning now of that letter? There"s something in that, too, perhaps. Whom was it from? I suspect…! No, I must find out!'