Nick Hornby said this quote
“ (from his random observations after reading David Copperfield by Charles Dickens)In the Old Curiosity Shop I discovered that in the character of Dick Swiveller, Dickens provided P.G. Wodehouse with pretty much the whole of his oeuvre. In David Copperfield, David's bosses Spenlow and Jorkins are what must be the earliest fictional representations of good cop/bad cop. ”