The Hunchback of Westminster by William le Queux

There was nothing in the way Casteno received me to suggest a man with a guilty secret. On the contrary, as I advanced through the doorway that led to the Green Dragon he stepped out boldly towards me the instant he recognised me beneath the disguise which he himself had suggested. "Welcome, my good friend," he said in a bluff and hearty fashion, stretching out his hand; "Welcome!"

I took the greeting he proffered, although I turned my head away and would not let him detect my real feelings. At first I was sorely tempted to take him by surprise and to denounce him there and then as the man who had stolen into Whitehall Court in those early morning hours, climbed through that open bedroom window, and had killed poor Colonel Napier, one of the truest and most loyal soldiers that ever lived. But I crushed all those temptations down. There was much for me to discover before I could show my suspicions so plainly as that. I had to go very slowly and carefully to work.