At any moment you’ll be discovered and thrust deeply into the bitter truth of this place. Who said that?
The author didn’t allocate the line to a character, and was undecided whether or not to include it. There was a chance critics may pounce on it as being autobiographical; that the author’s recent drugs charges would be smudged faintly but indelibly like a watermark on every page. Every fiction must embrace unavoidable elements of fact.