I'm currently re-reading 'Much Obliged, Jeeves', by PG Wodehouse (Obviously), and at one point Bertie's Aunt Dahlia is doing the Observer crossword puzzle, and gets stuck on the clue "measured tread of saint round St Pauls". The answer is given a couple of chapters later. I won't give it yet, but will say, what PGW didn't, that it has eight letters. I'm not s connoisseur of crossword clues, but I must say that I think it's a rather poor clue, but there, for what it's worth, it is.